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Stiell IG, Maloney J, Dreyer J, Munkley D, Spaite DW, Lyver MB, Sinclair JE, Wells GA. Advanced Life Support for out-of-hospital Chest Pain: The Opals Study. PREHOSP EMERG CARE 2022; 26:428-436. [PMID: 35191797 DOI: 10.1080/10903127.2022.2045407] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Context: As many as 14% of patients transported by ambulance with chest pain die prior to hospital discharge. To date, no high-quality controlled trials have revealed that prehospital advanced life support interventions affect survival for these patients.Objective: The Ontario Prehospital Advanced Life Support (OPALS) Study assessed the effect of adding an advance life support service to an existing basic life support emergency medical service program, on the rate of mortality and morbidity for patients with out-of-hospital chest pain.Design: Controlled clinical trial comparing survival for 9 months before and 9 after instituting an advanced life support program.Setting: Thirteen urban and suburban Ontario communities (populations ranging from 30,000 to 750,000; total, 2.5 million).Patients: All adult patients with a primary complaint of chest pain and transported by paramedics to the emergency department.Intervention: Paramedics were trained in standard advanced life support, which includes endotracheal intubation, intravenous furosemide and morphine, oral ASA, and sublingual NTG. Emergency medical services within each community had to meet predefined criteria in order to qualify for the advanced life support phase.Main Outcome Measure: Survival to hospital discharge.Results: Overall, 12,168 patients were enrolled in either the basic life support phase (N = 5,788) or the advanced life support phase (N = 6,380). The rate of mortality significantly decreased from 4.3% in the basic life support phase to 3.2% in the advanced life support phase (absolute change 1.1, 95% CI 0.4-1.8, P = 0.0013). We also demonstrated a decrease in mortality for the subgroup of patients with a discharge diagnosis of myocardial infarction (13.1 percent vs 8.2 percent, P = 0.002).Conclusions: The addition of a prehospital advanced life support program to an existing basic life support emergency medical service was associated with a significant decrease in the mortality rate among patients complaining of chest pain. Future research should clarify the most effective interventions and target specific populations.ClinicalTrials.gov Identifier: NCT00212953.
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Affiliation(s)
- Ian G Stiell
- University of Ottawa, Clinical Epidemiology, Ottawa, Canada
| | - Justin Maloney
- Department of Emergency Medicine, Ottawa Health Research Institute, University of Ottawa, Ottawa, Canada
| | - Jon Dreyer
- London Health Services Base Hospital, London, Canada
| | - Doug Munkley
- Niagara Regional Base Hospital, Niagara Falls, Canada
| | - Daniel W Spaite
- Department of Emergency Medicine, University of Arizona, Tucson, AZ
| | - Marion B Lyver
- Department of Family Medicine, McMaster University, Hamilton, Canada
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2
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Adamczewski-Musch J, Arnold O, Behnke C, Belounnas A, Belyaev A, Berger-Chen JC, Blanco A, Blume C, Böhmer M, Bordalo P, Chernenko S, Chlad L, Ciepal I, Deveaux C, Dreyer J, Epple E, Fabbietti L, Fateev O, Filip P, Fonte P, Franco C, Friese J, Fröhlich I, Galatyuk T, Garzón JA, Gernhäuser R, Golosov O, Golubeva M, Greifenhagen R, Guber F, Gumberidze M, Harabasz S, Heinz T, Hennino T, Hlavac S, Höhne C, Holzmann R, Ierusalimov A, Ivashkin A, Kämpfer B, Karavicheva T, Kardan B, Koenig I, Koenig W, Kohls M, Kolb BW, Korcyl G, Kornakov G, Kornas F, Kotte R, Kugler A, Kunz T, Kurepin A, Kurilkin A, Kurilkin P, Ladygin V, Lalik R, Lapidus K, Lebedev A, Lopes L, Lorenz M, Mahmoud T, Maier L, Malige A, Mamaev M, Mangiarotti A, Markert J, Matulewicz T, Maurus S, Metag V, Michel J, Mihaylov DM, Morozov S, Müntz C, Münzer R, Naumann L, Nowakowski K, Parpottas Y, Pechenov V, Pechenova O, Petukhov O, Piasecki K, Pietraszko J, Przygoda W, Pysz K, Ramos S, Ramstein B, Rathod N, Reshetin A, Rodriguez-Ramos P, Rosier P, Rost A, Rustamov A, Sadovsky A, Salabura P, Scheib T, Schuldes H, Schwab E, Scozzi F, Seck F, Sellheim P, Selyuzhenkov I, Siebenson J, Silva L, Singh U, Smyrski J, Sobolev YG, Spataro S, Spies S, Ströbele H, Stroth J, Sturm C, Svoboda O, Szala M, Tlusty P, Traxler M, Tsertos H, Usenko E, Wagner V, Wendisch C, Wiebusch MG, Wirth J, Wójcik D, Zanevsky Y, Zumbruch P. Directed, Elliptic, and Higher Order Flow Harmonics of Protons, Deuterons, and Tritons in Au+Au Collisions at sqrt[s_{NN}]=2.4 GeV. Phys Rev Lett 2020; 125:262301. [PMID: 33449792 DOI: 10.1103/physrevlett.125.262301] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 10/07/2020] [Accepted: 11/29/2020] [Indexed: 06/12/2023]
Abstract
Flow coefficients v_{n} of the orders n=1-6 are measured with the High-Acceptance DiElectron Spectrometer (HADES) at GSI for protons, deuterons, and tritons as a function of centrality, transverse momentum, and rapidity in Au+Au collisions at sqrt[s_{NN}]=2.4 GeV. Combining the information from the flow coefficients of all orders allows us to construct for the first time, at collision energies of a few GeV, a multidifferential picture of the angular emission pattern of these particles. It reflects the complicated interplay between the effect of the central fireball pressure on the emission of particles and their subsequent interaction with spectator matter. The high precision information on higher order flow coefficients is a major step forward in constraining the equation of state of dense baryonic matter.
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Affiliation(s)
- J Adamczewski-Musch
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - O Arnold
- Excellence Cluster "Origin and Structure of the Universe," 85748 Garching, Germany
- Physik Department E62, Technische Universität München, 85748 Garching, Germany
| | - C Behnke
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
| | - A Belounnas
- Laboratoire de Physique des 2 infinis Irène Joliot-Curie, Université Paris-Saclay, CNRS-IN2P3, F-91405 Orsay, France
| | - A Belyaev
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
| | - J C Berger-Chen
- Excellence Cluster "Origin and Structure of the Universe," 85748 Garching, Germany
- Physik Department E62, Technische Universität München, 85748 Garching, Germany
| | - A Blanco
- LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal
| | - C Blume
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
| | - M Böhmer
- Physik Department E62, Technische Universität München, 85748 Garching, Germany
| | - P Bordalo
- LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal
| | - S Chernenko
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
| | - L Chlad
- Nuclear Physics Institute, The Czech Academy of Sciences, 25068 Rez, Czech Republic
| | - I Ciepal
- Institute of Nuclear Physics, Polish Academy of Sciences, 31342 Kraków, Poland
| | - C Deveaux
- II.Physikalisches Institut, Justus Liebig Universität Giessen, 35392 Giessen, Germany
| | - J Dreyer
- Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, Germany
| | - E Epple
- Excellence Cluster "Origin and Structure of the Universe," 85748 Garching, Germany
- Physik Department E62, Technische Universität München, 85748 Garching, Germany
| | - L Fabbietti
- Excellence Cluster "Origin and Structure of the Universe," 85748 Garching, Germany
- Physik Department E62, Technische Universität München, 85748 Garching, Germany
| | - O Fateev
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
| | - P Filip
- Institute of Physics, Slovak Academy of Sciences, 84228 Bratislava, Slovakia
| | - P Fonte
- LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal
| | - C Franco
- LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal
| | - J Friese
- Physik Department E62, Technische Universität München, 85748 Garching, Germany
| | - I Fröhlich
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
| | - T Galatyuk
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - J A Garzón
- LabCAF. F. Física, Universidad de Santiago de Compostela, 15706 Santiago de Compostela, Spain
| | - R Gernhäuser
- Physik Department E62, Technische Universität München, 85748 Garching, Germany
| | - O Golosov
- National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), 115409 Moscow, Russia
| | - M Golubeva
- Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia
| | - R Greifenhagen
- Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, Germany
| | - F Guber
- Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia
| | - M Gumberidze
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - S Harabasz
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
- Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - T Heinz
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - T Hennino
- Laboratoire de Physique des 2 infinis Irène Joliot-Curie, Université Paris-Saclay, CNRS-IN2P3, F-91405 Orsay, France
| | - S Hlavac
- Institute of Physics, Slovak Academy of Sciences, 84228 Bratislava, Slovakia
| | - C Höhne
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- II.Physikalisches Institut, Justus Liebig Universität Giessen, 35392 Giessen, Germany
| | - R Holzmann
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - A Ierusalimov
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
| | - A Ivashkin
- Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia
| | - B Kämpfer
- Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, Germany
| | - T Karavicheva
- Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia
| | - B Kardan
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
| | - I Koenig
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - W Koenig
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - M Kohls
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
| | - B W Kolb
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - G Korcyl
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
| | - G Kornakov
- Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - F Kornas
- Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - R Kotte
- Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, Germany
| | - A Kugler
- Nuclear Physics Institute, The Czech Academy of Sciences, 25068 Rez, Czech Republic
| | - T Kunz
- Physik Department E62, Technische Universität München, 85748 Garching, Germany
| | - A Kurepin
- Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia
| | - A Kurilkin
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
| | - P Kurilkin
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
| | - V Ladygin
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
| | - R Lalik
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
| | - K Lapidus
- Excellence Cluster "Origin and Structure of the Universe," 85748 Garching, Germany
- Physik Department E62, Technische Universität München, 85748 Garching, Germany
| | - A Lebedev
- Institute of Theoretical and Experimental Physics, 117218 Moscow, Russia
| | - L Lopes
- LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal
| | - M Lorenz
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
| | - T Mahmoud
- II.Physikalisches Institut, Justus Liebig Universität Giessen, 35392 Giessen, Germany
| | - L Maier
- Physik Department E62, Technische Universität München, 85748 Garching, Germany
| | - A Malige
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
| | - M Mamaev
- National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), 115409 Moscow, Russia
| | - A Mangiarotti
- LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal
| | - J Markert
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - T Matulewicz
- Uniwersytet Warszawski, Wydział Fizyki, Instytut Fizyki Doświadczalnej, 02-093 Warszawa, Poland
| | - S Maurus
- Physik Department E62, Technische Universität München, 85748 Garching, Germany
| | - V Metag
- II.Physikalisches Institut, Justus Liebig Universität Giessen, 35392 Giessen, Germany
| | - J Michel
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
| | - D M Mihaylov
- Excellence Cluster "Origin and Structure of the Universe," 85748 Garching, Germany
- Physik Department E62, Technische Universität München, 85748 Garching, Germany
| | - S Morozov
- Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia
- National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), 115409 Moscow, Russia
| | - C Müntz
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
| | - R Münzer
- Excellence Cluster "Origin and Structure of the Universe," 85748 Garching, Germany
- Physik Department E62, Technische Universität München, 85748 Garching, Germany
| | - L Naumann
- Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, Germany
| | - K Nowakowski
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
| | - Y Parpottas
- Department of Physics, University of Cyprus, 1678 Nicosia, Cyprus
| | - V Pechenov
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - O Pechenova
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - O Petukhov
- Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia
| | - K Piasecki
- Uniwersytet Warszawski, Wydział Fizyki, Instytut Fizyki Doświadczalnej, 02-093 Warszawa, Poland
| | - J Pietraszko
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - W Przygoda
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
| | - K Pysz
- Institute of Nuclear Physics, Polish Academy of Sciences, 31342 Kraków, Poland
| | - S Ramos
- LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal
| | - B Ramstein
- Laboratoire de Physique des 2 infinis Irène Joliot-Curie, Université Paris-Saclay, CNRS-IN2P3, F-91405 Orsay, France
| | - N Rathod
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
| | - A Reshetin
- Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia
| | - P Rodriguez-Ramos
- Nuclear Physics Institute, The Czech Academy of Sciences, 25068 Rez, Czech Republic
| | - P Rosier
- Laboratoire de Physique des 2 infinis Irène Joliot-Curie, Université Paris-Saclay, CNRS-IN2P3, F-91405 Orsay, France
| | - A Rost
- Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - A Rustamov
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - A Sadovsky
- Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia
| | - P Salabura
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
| | - T Scheib
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
| | - H Schuldes
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
| | - E Schwab
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - F Scozzi
- Technische Universität Darmstadt, 64289 Darmstadt, Germany
- Laboratoire de Physique des 2 infinis Irène Joliot-Curie, Université Paris-Saclay, CNRS-IN2P3, F-91405 Orsay, France
| | - F Seck
- Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - P Sellheim
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
| | - I Selyuzhenkov
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), 115409 Moscow, Russia
| | - J Siebenson
- Physik Department E62, Technische Universität München, 85748 Garching, Germany
| | - L Silva
- LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal
| | - U Singh
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
| | - J Smyrski
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
| | - Yu G Sobolev
- Nuclear Physics Institute, The Czech Academy of Sciences, 25068 Rez, Czech Republic
| | - S Spataro
- Dipartimento di Fisica and INFN, Università di Torino, 10125 Torino, Italy
| | - S Spies
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
| | - H Ströbele
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
| | - J Stroth
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
| | - C Sturm
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - O Svoboda
- Nuclear Physics Institute, The Czech Academy of Sciences, 25068 Rez, Czech Republic
| | - M Szala
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
| | - P Tlusty
- Nuclear Physics Institute, The Czech Academy of Sciences, 25068 Rez, Czech Republic
| | - M Traxler
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - H Tsertos
- Department of Physics, University of Cyprus, 1678 Nicosia, Cyprus
| | - E Usenko
- Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia
| | - V Wagner
- Nuclear Physics Institute, The Czech Academy of Sciences, 25068 Rez, Czech Republic
| | - C Wendisch
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - M G Wiebusch
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - J Wirth
- Excellence Cluster "Origin and Structure of the Universe," 85748 Garching, Germany
- Physik Department E62, Technische Universität München, 85748 Garching, Germany
| | - D Wójcik
- Uniwersytet Warszawski, Wydział Fizyki, Instytut Fizyki Doświadczalnej, 02-093 Warszawa, Poland
| | - Y Zanevsky
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
| | - P Zumbruch
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
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Salabura P, Adamczewski-Musch J, Arnoldi-Meadows B, Belounnas A, Belyaev A, Blanco A, Blume C, Böhmer M, Borisenko S, Chlad L, Chudoba P, Ciepał I, Dittert D, Dreyer J, Esmail W, Dürr M, Fabbietti L, Fateev S, Fonte P, Friese J, Fröhlich I, Förtsch J, Galatyuk T, Gernhäuser R, Golosov O, Golubeva M, Greifenhagen R, Guber F, Gumberidze M, Harabasz S, Hensch R, Höhne C, Holzmann R, Huck H, Ierusalimov A, Ivashkin A, Kämpfer B, Kampert KH, Kardan B, Koenig I, Koenig W, Kornakov G, Kornas F, Kotte R, Kozela A, Kres I, Kuboś J, Kugler A, Kulesa P, Ladygin V, Lalik R, Lebedev A, Lebedev S, Linev S, Lopes L, Lorenz M, Lykasov G, Mahmoud T, Malige A, Markert J, Matulewicz T, Maurus S, Metag V, Michel J, Morozov S, Müntz C, Naumann L, Nowakowski K, Otto JH, Patel V, Pauly C, Pechenov V, Pechenova O, Petukhov O, Pfeifer D, Piasecki K, Pietraszko J, Prozorov A, Przygoda W, Pysz K, Ramstein B, Rathod N, Reshetin A, Ritman L, Rodriguez-Ramos P, Rost A, Salabura P, Scozzi F, Seck F, Selyuzhenkov I, Shabanov I, Singh US, Smyrski J, Spies S, Ströbele H, Stroth J, Stumm J, Svoboda O, Szala M, Tlusty P, Traxler M, Ungethüm C, Vazquez-Doce O, Wagner V, Weber A, Wendisch C, Wiebusch M, Wintz P, Wirth J, Zhilin A, Zumbruch P. Exploring time like tranistions in pp, πp and AA reactions with HADES. EPJ Web Conf 2020. [DOI: 10.1051/epjconf/202024101013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Radiative transition of an excited baryon to a nucleon with emission of a virtual massive photon converting to dielectron pair (Dalitz decays) provides important information about baryon-photon coupling at low q2 in timelike region. A prominent enhancement in the respective electromagnetic transition Form Factors (etFF) at q2 near vector mesons ρ/ω poles has been predicted by various calculations reflecting strong baryon-vector meson couplings. The understanding of these couplings is also of primary importance for the interpretation of the emissivity of QCD matter studied in heavy ion collisions via dilepton emission. Dedicated measurements of baryon Dalitz decays in proton-proton and pion-proton scattering with HADES detector at GSI/FAIR are presented and discussed. The relevance of these studies for the interpretation of results obtained from heavy ion reactions is elucidated on the example of the HADES results.
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4
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Adamczewski-Musch J, Arnold O, Atomssa ET, Behnke C, Belounnas A, Belyaev A, Berger-Chen JC, Biernat J, Blanco A, Blume C, Böhmer M, Chernenko S, Chlad L, Chudoba P, Ciepał I, Deveaux C, Dittert D, Dreyer J, Epple E, Fabbietti L, Fateev O, Fonte P, Franco C, Friese J, Fröhlich I, Galatyuk T, Garzón JA, Gernhäuser R, Golubeva M, Greifenhagen R, Guber F, Gumberidze M, Harabasz S, Heinz T, Hennino T, Höhne C, Holzmann R, Ierusalimov A, Ivashkin A, Kämpfer B, Kardan B, Koenig I, Koenig W, Kolb BW, Korcyl G, Kornakov G, Kornas F, Kotte R, Kuboś J, Kugler A, Kunz T, Kurepin A, Kurilkin A, Kurilkin P, Ladygin V, Lalik R, Lapidus K, Lebedev A, Linev S, Lopes L, Lorenz M, Mahmoud T, Maier L, Malige A, Markert J, Maurus S, Metag V, Michel J, Mihaylov DM, Mikhaylov V, Morozov S, Müntz C, Münzer R, Naumann L, Nowakowski K, Parpottas Y, Pechenov V, Pechenova O, Petukhov O, Pietraszko J, Prozorov AP, Przygoda W, Ramstein B, Rathod N, Reshetin A, Rodriguez-Ramos P, Rost A, Sadovsky A, Salabura P, Scheib T, Schmidt-Sommerfeld K, Schuldes H, Schwab E, Scozzi F, Seck F, Sellheim P, Siebenson J, Silva L, Smyrski J, Spataro S, Spies S, Ströbele H, Stroth J, Strzempek P, Sturm C, Svoboda O, Szala M, Tlusty P, Traxler M, Tsertos H, Ungethüm C, Vázquez Doce O, Wagner V, Wendisch C, Wiebusch MG, Wirth J, Wójcik D, Zanevsky Y, Zumbruch P, Curceanu C, Piscicchia K, Scordo A. Strong Absorption of Hadrons with Hidden and Open Strangeness in Nuclear Matter. Phys Rev Lett 2019; 123:022002. [PMID: 31386541 DOI: 10.1103/physrevlett.123.022002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 04/29/2019] [Indexed: 06/10/2023]
Abstract
We present the first observation of K^{-} and ϕ absorption within nuclear matter by means of π^{-}-induced reactions on C and W targets at an incident beam momentum of 1.7 GeV/c studied with HADES at SIS18/GSI. The double ratio (K^{-}/K^{+})_{W}/(K^{-}/K^{+})_{C} is found to be 0.319±0.009(stat)_{-0.012}^{+0.014}(syst) indicating a larger absorption of K^{-} in heavier targets as compared to lighter ones. The measured ϕ/K^{-} ratios in π^{-}+C and π^{-}+W reactions within the HADES acceptance are found to be equal to 0.55±0.04(stat)_{-0.07}^{+0.06}(syst) and to 0.63±0.06(stat)_{-0.11}^{+0.11}(syst), respectively. The similar ratios measured in the two different reactions demonstrate for the first time experimentally that the dynamics of the ϕ meson in nuclear medium is strongly coupled to the K^{-} dynamics. The large difference in the ϕ production off C and W nuclei is discussed in terms of a strong ϕN in-medium coupling. These results are relevant for the description of heavy-ion collisions and the structure of neutron stars.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - C Curceanu
- INFN, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
| | - K Piscicchia
- INFN, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
- CENTRO FERMI - Museo Storico della Fisica e Centro Studi e Ricerche "Enrico Fermi", 00184 Rome, Italy
| | - A Scordo
- INFN, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
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Dreyer J, Rautenbach M, Booysen E, van Staden AD, Deane SM, Dicks LMT. Xenorhabdus khoisanae SB10 produces Lys-rich PAX lipopeptides and a Xenocoumacin in its antimicrobial complex. BMC Microbiol 2019; 19:132. [PMID: 31195965 PMCID: PMC6567599 DOI: 10.1186/s12866-019-1503-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 05/31/2019] [Indexed: 01/31/2023] Open
Abstract
BACKGROUND Xenorhabdus spp. live in close symbiosis with nematodes of the Steinernema genus. Steinernema nematodes infect an insect larva and release their symbionts into the haemocoel of the insect. Once released into the haemocoel, the bacteria produce bioactive compounds to create a semi-exclusive environment by inhibiting the growth of bacteria, yeasts and molds. The antimicrobial compounds thus far identified are xenocoumacins, xenortides, xenorhabdins, indole derivatives, xenoamicins, bicornutin and a number of antimicrobial peptides. The latter may be linear peptides such as the bacteriocins xenocin and xenorhabdicin, rhabdopeptides and cabanillasin, or cyclic, such as PAX lipopeptides, taxlllaids, xenobactin and szentiamide. Thus far, production of antimicrobial compounds have been reported for Xenorhabdus nematophila, Xenorhabdus budapestensis, Xenorhabdus cabanillasii, Xenorhabdus kozodoii, Xenorhabdus szentirmaii, Xenorhabdus doucetiae, Xenorhabdus mauleonii, Xenorhabdus indica and Xenorhabdus bovienii. Here we describe, for the first time, PAX lipopeptides and xenocoumacin 2 produced by Xenorhabdus khoisanae. These compounds were identified using ultraperformance liquid chromatography, linked to high resolution electrospray ionisation mass spectrometry and tandem mass spectrometry. RESULTS Cell-free supernatants of X. khoisanae SB10 were heat stable and active against Bacillus subtilis subsp. subtilis, Escherichia coli and Candida albicans. Five lysine-rich lipopeptides from the PAX group were identified in HPLC fractions, with PAX1' and PAX7 present in the highest concentrations. Three novel PAX7 peptides with putative enoyl modifications and two linear analogues of PAX1' were also detected. A small antibiotic compound, yellow in colour and λmax of 314 nm, was recovered from the HPLC fractions and identified as xenocoumacin 2. The PAX lipopeptides and xenocoumacin 2 correlated with the genes and gene clusters in the genome of X. khoisanae SB10. CONCLUSION With UPLC-MS and MSe analyses of compounds in the antimicrobial complex of X. khoisanae SB10, a number of PAX peptides and a xenocoumacin were identified. The combination of pure PAX1' peptide with xenocoumacin 2 resulted in high antimicrobial activity. Many of the fractions did, however, contain labile compounds and some fractions were difficult to resolve. It is thus possible that strain SB10 may produce more antimicrobial compounds than reported here, as suggested by the APE Ec biosynthetic complex. Further research is required to develop these broad-spectrum antimicrobial compounds into drugs that may be used in the fight against microbial infections.
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Affiliation(s)
- J Dreyer
- Department of Microbiology, Stellenbosch University, Private Bag X1, Matieland, 7602, South Africa
| | - M Rautenbach
- BIOPEP Peptide Group, Department of Biochemistry, Stellenbosch University, Private Bag X1, Matieland, 7602, South Africa.
| | - E Booysen
- Department of Microbiology, Stellenbosch University, Private Bag X1, Matieland, 7602, South Africa
| | - A D van Staden
- Department of Microbiology, Stellenbosch University, Private Bag X1, Matieland, 7602, South Africa
| | - S M Deane
- Department of Microbiology, Stellenbosch University, Private Bag X1, Matieland, 7602, South Africa
| | - L M T Dicks
- Department of Microbiology, Stellenbosch University, Private Bag X1, Matieland, 7602, South Africa.
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Guerra R, Dreyer J, Pereira R, Carvalho P, Brisa G, Hochuli-Vieira E. Use of autogenous grafts and bone substitutes in the maxillary sinus: volumetric analysis. Int J Oral Maxillofac Surg 2019. [DOI: 10.1016/j.ijom.2019.03.636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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7
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Ramstein B, Adamczewski-Musch J, Arnold O, Arnoldi-Meadows B, Belounnas A, Belyaev A, Biernat J, Blanco A, Blume C, Böhmer M, Bordalo P, Chlad L, Chudoba P, Ciepał I, Deveaux C, Dittert D, Dreyer J, Fabbietti L, Fateev O, Fonte P, Franco C, Friese J, Fröhlich I, Galatyuk T, Garzón JA, Gernhäuser R, Gillitzer A, Golubeva M, Greifenhagen R, Guber F, Gumberidze M, Harabasz S, Heinz T, Hennino T, Himmelreich M, Höhne C, Holzmann R, Ierusalimov A, Ivanov V, Ivashkin A, Kämpfer B, Kajetanowicz M, Kampert KH, Karavicheva T, Kardan B, Khomyakov V, Koenig I, Koenig W, Korcyl G, Kornakov G, Kornas F, Kotte R, Kozela A, Kuboś J, Kugler A, Kunz T, Kurepin A, Kurilkin P, Kushpil V, Ladygin V, Lalik R, Lebedev A, Linev S, Liu M, Lopes L, Lorenz M, Lykasov G, Mahmoud T, Malakhov A, Markert J, Maurus S, Metag V, Michel J, Mihaylov D, Mikhaylov V, Morozov S, Müntz C, Naumann L, Nowakowski K, Parpottas Y, Patel V, Pauly C, Pechenov V, Pechenova O, Pereira A, Petousis V, Petukhov O, Pfeifer D, Pietraszko J, Przygoda W, Pysz K, Ramos S, Reshetin A, Ritman L, Rodriguez-Ramos P, Rost A, Sadovsky A, Salabura P, Scheib T, Schuldes H, Schwab E, Scozzi F, Seck F, Sellheim P, Selyuzhenkov I, Silva L, Smyrski J, Sobiella M, Spataro S, Spies S, Ströbele H, Stroth J, Strzempek P, Svoboda O, Szala M, Taranenko A, Tlusty P, Traxler M, Troyan A, Tsertos H, Wagner V, Wendisch C, Wiebusch M, Wintz P, Wirth J, Włoch B, Zhilin A, Zinchenko A, Zumbruch P, Zuschke M. Time-Like Baryon Transitions studies with HADES. EPJ Web Conf 2019. [DOI: 10.1051/epjconf/201919901008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The HADES collaboration uses the e+e− production as a probe of the resonance matter produced in collisions at incident energies of 1-3.5 GeV/nucleon at GSI. Elementary reactions provide useful references for these studies and give information on resonance Dalitz decays (R→Ne+e−). Such processes are sensitive to the structure of time-like electromagnetic baryon transitions in a kinematic range where (off-shell) vector mesons play a crucial role. Results obtained in proton-proton reactions and in a commissioning pion-beam experiment are reported and prospects for future pion beam experiments and for first hyperon Dalitz decay measurements are described. The connection with the investigations of medium effects to be continued with HADES in the next years at SIS18 and SIS100 is also discussed.
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8
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Gibor G, Ilan N, Journo S, Sharabi A, Dreyer J, Gertel S, Singh P, Menachem A, Snir N, Elkayam O, Vlodavsky I, Arad U. Heparanase is expressed in adult human osteoarthritic cartilage and drives catabolic responses in primary chondrocytes. Osteoarthritis Cartilage 2018; 26:1110-1117. [PMID: 29803826 DOI: 10.1016/j.joca.2018.05.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 04/16/2018] [Accepted: 05/01/2018] [Indexed: 02/02/2023]
Abstract
OBJECTIVES The chondrocytes' pericellular matrix acts as a mechanosensor by sequestering growth factors that are bound to heparan sulfate (HS) proteoglycans. Heparanase is the sole mammalian enzyme with HS degrading endoglycosidase activity. Here, we aimed to ascertain whether heparanase plays a role in modulating the anabolic or catabolic responses of human articular chondrocytes. METHODS Primary chondrocytes were incubated with pro-heparanase and catabolic and anabolic gene expression was analyzed by quantitative polymerase chain reaction (PCR). MMP13 enzymatic activity in the culture medium was measured with a specific fluorescent assay. Extracellular regulated kinase (ERK) phosphorylation was evaluated by Western blot. Human osteoarthritis (OA) cartilage was assessed for heparanase expression by reverse-transcriptase PCR, by Western blot and by a heparanase enzymatic activity assay. RESULTS Cultured chondrocytes rapidly associated with and activated pro-heparanase. Heparanase induced the catabolic genes MMP13 and ADAMTS4 and the secretion of active MMP13, and down-regulated the anabolic genes ACAN and COL2A1. PG545, a HS-mimetic, inhibited the effects of heparanase. Heparanase expression and enzymatic activity were demonstrated in adult human osteoarthritic cartilage. Heparanase induced ERK phosphorylation in cultured chondrocytes and this could be inhibited by PG545, by fibroblast growth factor 2 (FGF2) neutralizing antibodies and by a FGF-receptor inhibitor. CONCLUSIONS Heparanase is active in osteoarthritic cartilage and induces catabolic responses in primary human chondrocytes. This response is due, at least in part, to the release of soluble growth factors such as FGF2.
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Affiliation(s)
- G Gibor
- Department of Rheumatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - N Ilan
- Cancer and Vascular Biology Research Center, Technion, Haifa, Israel
| | - S Journo
- Department of Rheumatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - A Sharabi
- Department of Rheumatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel; Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - J Dreyer
- Department of Rheumatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel; Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - S Gertel
- Department of Rheumatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - P Singh
- Cancer and Vascular Biology Research Center, Technion, Haifa, Israel
| | - A Menachem
- Division of Orthopedics, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - N Snir
- Division of Orthopedics, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - O Elkayam
- Department of Rheumatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel; Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - I Vlodavsky
- Cancer and Vascular Biology Research Center, Technion, Haifa, Israel
| | - U Arad
- Department of Rheumatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel; Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
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9
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Köhler K, von Kutzleben M, Hochgraeber I, Dreyer J, Holle B. WHAT CONSTITUTES STABILITY OF HOME-BASED CARE ARRANGEMENTS FOR PEOPLE WITH DEMENTIA? A META-STUDY. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.617] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- K. Köhler
- German Center for Neurodegenerative Diseases (DZNE) Site Witten, Witten, Witten, Germany,
- University of Witten/Herdecke, School of Nursing Science, Witten, Germany
| | - M. von Kutzleben
- German Center for Neurodegenerative Diseases (DZNE) Site Witten, Witten, Witten, Germany,
| | - I. Hochgraeber
- German Center for Neurodegenerative Diseases (DZNE) Site Witten, Witten, Witten, Germany,
- University of Witten/Herdecke, School of Nursing Science, Witten, Germany
| | - J. Dreyer
- German Center for Neurodegenerative Diseases (DZNE) Site Witten, Witten, Witten, Germany,
- University of Witten/Herdecke, School of Nursing Science, Witten, Germany
| | - B. Holle
- German Center for Neurodegenerative Diseases (DZNE) Site Witten, Witten, Witten, Germany,
- University of Witten/Herdecke, School of Nursing Science, Witten, Germany
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10
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Affiliation(s)
- B. Panke-Kochinke
- German Center for Neurodegenerative Diseases (DZNE), Witten, Germany,
- University of Osnabrueck, Osnabrueck, Germany
| | - J. Serbser
- German Center for Neurodegenerative Diseases (DZNE), Witten, Germany,
| | - J. Dreyer
- German Center for Neurodegenerative Diseases (DZNE), Witten, Germany,
| | - M. Roes
- German Center for Neurodegenerative Diseases (DZNE), Witten, Germany,
- University of Witten/Herdecke, Witten, Germany,
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11
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Calandrini V, Dreyer J, Ippoliti E, Carloni P. Hydration of chloride anions in the NanC Porin fromEscherichia coli:A comparative study by QM/MM and MD simulations. J Chem Phys 2014; 141:22D521. [DOI: 10.1063/1.4901111] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Affiliation(s)
- V. Calandrini
- Computational Biophysics, German Research School for Simulation Sciences, D-52425 Jülich, Germany
- Institute for Advanced Simulations IAS-5, Computational Biomedicine, Forschungszentrum Jülich, D-52425 Jülich, Germany
| | - J. Dreyer
- Computational Biophysics, German Research School for Simulation Sciences, D-52425 Jülich, Germany
- Institute for Advanced Simulations IAS-5, Computational Biomedicine, Forschungszentrum Jülich, D-52425 Jülich, Germany
| | - E. Ippoliti
- Computational Biophysics, German Research School for Simulation Sciences, D-52425 Jülich, Germany
- Institute for Advanced Simulations IAS-5, Computational Biomedicine, Forschungszentrum Jülich, D-52425 Jülich, Germany
| | - P. Carloni
- Computational Biophysics, German Research School for Simulation Sciences, D-52425 Jülich, Germany
- Institute for Advanced Simulations IAS-5, Computational Biomedicine, Forschungszentrum Jülich, D-52425 Jülich, Germany
- Institute for Neuroscience and Medicine INM-9, Computational Biomedicine, Forschungszentrum Jülich, D-52425 Jülich, Germany
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12
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Aartsen MG, Abbasi R, Abdou Y, Ackermann M, Adams J, Aguilar JA, Ahlers M, Altmann D, Auffenberg J, Bai X, Baker M, Barwick SW, Baum V, Bay R, Beattie K, Beatty JJ, Bechet S, Becker Tjus J, Becker KH, Bell M, Benabderrahmane ML, BenZvi S, Berdermann J, Berghaus P, Berley D, Bernardini E, Bernhard A, Bertrand D, Besson DZ, Bindig D, Bissok M, Blaufuss E, Blumenthal J, Boersma DJ, Bohaichuk S, Bohm C, Bose D, Böser S, Botner O, Brayeur L, Brown AM, Bruijn R, Brunner J, Buitink S, Carson M, Casey J, Casier M, Chirkin D, Christy B, Clark K, Clevermann F, Cohen S, Cowen DF, Cruz Silva AH, Danninger M, Daughhetee J, Davis JC, De Clercq C, De Ridder S, Desiati P, de Vries-Uiterweerd G, de With M, DeYoung T, Díaz-Vélez JC, Dreyer J, Dunkman M, Eagan R, Eberhardt B, Eisch J, Ellsworth RW, Engdegård O, Euler S, Evenson PA, Fadiran O, Fazely AR, Fedynitch A, Feintzeig J, Feusels T, Filimonov K, Finley C, Fischer-Wasels T, Flis S, Franckowiak A, Franke R, Frantzen K, Fuchs T, Gaisser TK, Gallagher J, Gerhardt L, Gladstone L, Glüsenkamp T, Goldschmidt A, Golup G, Goodman JA, Góra D, Grant D, Groß A, Gurtner M, Ha C, Haj Ismail A, Hallgren A, Halzen F, Hanson K, Heereman D, Heimann P, Heinen D, Helbing K, Hellauer R, Hickford S, Hill GC, Hoffman KD, Hoffmann R, Homeier A, Hoshina K, Huelsnitz W, Hulth PO, Hultqvist K, Hussain S, Ishihara A, Jacobi E, Jacobsen J, Japaridze GS, Jero K, Jlelati O, Kaminsky B, Kappes A, Karg T, Karle A, Kelley JL, Kiryluk J, Kislat F, Kläs J, Klein SR, Köhne JH, Kohnen G, Kolanoski H, Köpke L, Kopper C, Kopper S, Koskinen DJ, Kowalski M, Krasberg M, Kroll G, Kunnen J, Kurahashi N, Kuwabara T, Labare M, Landsman H, Larson MJ, Lesiak-Bzdak M, Leute J, Lünemann J, Madsen J, Maruyama R, Mase K, Matis HS, McNally F, Meagher K, Merck M, Mészáros P, Meures T, Miarecki S, Middell E, Milke N, Miller J, Mohrmann L, Montaruli T, Morse R, Nahnhauer R, Naumann U, Niederhausen H, Nowicki SC, Nygren DR, Obertacke A, Odrowski S, Olivas A, Olivo M, O'Murchadha A, Panknin S, Paul L, Pepper JA, Pérez de los Heros C, Pfendner C, Pieloth D, Pirk N, Posselt J, Price PB, Przybylski GT, Rädel L, Rawlins K, Redl P, Resconi E, Rhode W, Ribordy M, Richman M, Riedel B, Rodrigues JP, Rott C, Ruhe T, Ruzybayev B, Ryckbosch D, Saba SM, Salameh T, Sander HG, Santander M, Sarkar S, Schatto K, Scheel M, Scheriau F, Schmidt T, Schmitz M, Schoenen S, Schöneberg S, Schönherr L, Schönwald A, Schukraft A, Schulte L, Schulz O, Seckel D, Seo SH, Sestayo Y, Seunarine S, Sheremata C, Smith MWE, Soiron M, Soldin D, Spiczak GM, Spiering C, Stamatikos M, Stanev T, Stasik A, Stezelberger T, Stokstad RG, Stößl A, Strahler EA, Ström R, Sullivan GW, Taavola H, Taboada I, Tamburro A, Ter-Antonyan S, Tilav S, Toale PA, Toscano S, Usner M, van der Drift D, van Eijndhoven N, Van Overloop A, van Santen J, Vehring M, Voge M, Vraeghe M, Walck C, Waldenmaier T, Wallraff M, Wasserman R, Weaver C, Wellons M, Wendt C, Westerhoff S, Whitehorn N, Wiebe K, Wiebusch CH, Williams DR, Wissing H, Wolf M, Wood TR, Woschnagg K, Xu C, Xu DL, Xu XW, Yanez JP, Yodh G, Yoshida S, Zarzhitsky P, Ziemann J, Zierke S, Zilles A, Zoll M. Measurement of the atmospheric νe flux in IceCube. Phys Rev Lett 2013; 110:151105. [PMID: 25167245 DOI: 10.1103/physrevlett.110.151105] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2012] [Revised: 03/14/2013] [Indexed: 06/03/2023]
Abstract
We report the first measurement of the atmospheric electron neutrino flux in the energy range between approximately 80 GeV and 6 TeV, using data recorded during the first year of operation of IceCube's DeepCore low-energy extension. Techniques to identify neutrinos interacting within the DeepCore volume and veto muons originating outside the detector are demonstrated. A sample of 1029 events is observed in 281 days of data, of which 496±66(stat)±88(syst) are estimated to be cascade events, including both electron neutrino and neutral current events. The rest of the sample includes residual backgrounds due to atmospheric muons and charged current interactions of atmospheric muon neutrinos. The flux of the atmospheric electron neutrinos is consistent with models of atmospheric neutrinos in this energy range. This constitutes the first observation of electron neutrinos and neutral current interactions in a very large volume neutrino telescope optimized for the TeV energy range.
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Affiliation(s)
- M G Aartsen
- School of Chemistry and Physics, University of Adelaide, Adelaide, South Australia 5005, Australia
| | - R Abbasi
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - Y Abdou
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | | | - J Adams
- Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch, New Zealand
| | - J A Aguilar
- Département de physique nucléaire et corpusculaire, Université de Genève, CH-1211 Genève, Switzerland
| | - M Ahlers
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - D Altmann
- Institut für Physik, Humboldt-Universität zu Berlin, D-12489 Berlin, Germany
| | - J Auffenberg
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - X Bai
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - M Baker
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - S W Barwick
- Department of Physics and Astronomy, University of California, Irvine, California 92697, USA
| | - V Baum
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - R Bay
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - K Beattie
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - J J Beatty
- Department of Physics and Center for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, Ohio 43210, USA and Department of Astronomy, The Ohio State University, Columbus, Ohio 43210, USA
| | - S Bechet
- Université Libre de Bruxelles, Science Faculty CP230, B-1050 Brussels, Belgium
| | - J Becker Tjus
- Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - K-H Becker
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - M Bell
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | | | - S BenZvi
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | | | | | - D Berley
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | | | | | - D Bertrand
- Université Libre de Bruxelles, Science Faculty CP230, B-1050 Brussels, Belgium
| | - D Z Besson
- Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045, USA
| | - D Bindig
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - M Bissok
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - E Blaufuss
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - J Blumenthal
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - D J Boersma
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany and Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - S Bohaichuk
- Department of Physics, University of Alberta, Edmonton, Alberta T6G 2G7, Canada
| | - C Bohm
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - D Bose
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - S Böser
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | - O Botner
- Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - L Brayeur
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - A M Brown
- Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch, New Zealand
| | - R Bruijn
- Laboratory for High Energy Physics, École Polytechnique Fédérale, CH-1015 Lausanne, Switzerland
| | | | - S Buitink
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - M Carson
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - J Casey
- School of Physics and Center for Relativistic Astrophysics, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
| | - M Casier
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - D Chirkin
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - B Christy
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - K Clark
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - F Clevermann
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - S Cohen
- Laboratory for High Energy Physics, École Polytechnique Fédérale, CH-1015 Lausanne, Switzerland
| | - D F Cowen
- Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, Pennsylvania 16802, USA and Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | | | - M Danninger
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - J Daughhetee
- School of Physics and Center for Relativistic Astrophysics, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
| | - J C Davis
- Department of Physics and Center for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, Ohio 43210, USA
| | - C De Clercq
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - S De Ridder
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - P Desiati
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | | | - M de With
- Institut für Physik, Humboldt-Universität zu Berlin, D-12489 Berlin, Germany
| | - T DeYoung
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - J C Díaz-Vélez
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - J Dreyer
- Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - M Dunkman
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - R Eagan
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - B Eberhardt
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - J Eisch
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - R W Ellsworth
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - O Engdegård
- Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - S Euler
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - P A Evenson
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - O Fadiran
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - A R Fazely
- Department of Physics, Southern University, Baton Rouge, Louisiana 70813, USA
| | - A Fedynitch
- Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - J Feintzeig
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - T Feusels
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - K Filimonov
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - C Finley
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - T Fischer-Wasels
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - S Flis
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - A Franckowiak
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | | | - K Frantzen
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - T Fuchs
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - T K Gaisser
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - J Gallagher
- Department of Astronomy, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - L Gerhardt
- Department of Physics, University of California, Berkeley, California 94720, USA and Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - L Gladstone
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | | | - A Goldschmidt
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - G Golup
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - J A Goodman
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - D Góra
- DESY, D-15735 Zeuthen, Germany
| | - D Grant
- Department of Physics, University of Alberta, Edmonton, Alberta T6G 2G7, Canada
| | - A Groß
- T.U. Munich, D-85748 Garching, Germany
| | - M Gurtner
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - C Ha
- Department of Physics, University of California, Berkeley, California 94720, USA and Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - A Haj Ismail
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - A Hallgren
- Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - F Halzen
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - K Hanson
- Université Libre de Bruxelles, Science Faculty CP230, B-1050 Brussels, Belgium
| | - D Heereman
- Université Libre de Bruxelles, Science Faculty CP230, B-1050 Brussels, Belgium
| | - P Heimann
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - D Heinen
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - K Helbing
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - R Hellauer
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - S Hickford
- Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch, New Zealand
| | - G C Hill
- School of Chemistry and Physics, University of Adelaide, Adelaide, South Australia 5005, Australia
| | - K D Hoffman
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - R Hoffmann
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - A Homeier
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | - K Hoshina
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - W Huelsnitz
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - P O Hulth
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - K Hultqvist
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - S Hussain
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - A Ishihara
- Department of Physics, Chiba University, Chiba 263-8522, Japan
| | | | - J Jacobsen
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - G S Japaridze
- CTSPS, Clark-Atlanta University, Atlanta, Georgia 30314, USA
| | - K Jero
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - O Jlelati
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | | | - A Kappes
- Institut für Physik, Humboldt-Universität zu Berlin, D-12489 Berlin, Germany
| | - T Karg
- DESY, D-15735 Zeuthen, Germany
| | - A Karle
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - J L Kelley
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - J Kiryluk
- Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800, USA
| | | | - J Kläs
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - S R Klein
- Department of Physics, University of California, Berkeley, California 94720, USA and Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - J-H Köhne
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - G Kohnen
- Université de Mons, 7000 Mons, Belgium
| | - H Kolanoski
- Institut für Physik, Humboldt-Universität zu Berlin, D-12489 Berlin, Germany
| | - L Köpke
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - C Kopper
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - S Kopper
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - D J Koskinen
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - M Kowalski
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | - M Krasberg
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - G Kroll
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - J Kunnen
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - N Kurahashi
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - T Kuwabara
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - M Labare
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - H Landsman
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - M J Larson
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - M Lesiak-Bzdak
- Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800, USA
| | - J Leute
- T.U. Munich, D-85748 Garching, Germany
| | - J Lünemann
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - J Madsen
- Department of Physics, University of Wisconsin, River Falls, Wisconsin 54022, USA
| | - R Maruyama
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - K Mase
- Department of Physics, Chiba University, Chiba 263-8522, Japan
| | - H S Matis
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - F McNally
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - K Meagher
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - M Merck
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - P Mészáros
- Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, Pennsylvania 16802, USA and Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - T Meures
- Université Libre de Bruxelles, Science Faculty CP230, B-1050 Brussels, Belgium
| | - S Miarecki
- Department of Physics, University of California, Berkeley, California 94720, USA and Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | | | - N Milke
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - J Miller
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | | | - T Montaruli
- Département de physique nucléaire et corpusculaire, Université de Genève, CH-1211 Genève, Switzerland
| | - R Morse
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | | | - U Naumann
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - H Niederhausen
- Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800, USA
| | - S C Nowicki
- Department of Physics, University of Alberta, Edmonton, Alberta T6G 2G7, Canada
| | - D R Nygren
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - A Obertacke
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | | | - A Olivas
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - M Olivo
- Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - A O'Murchadha
- Université Libre de Bruxelles, Science Faculty CP230, B-1050 Brussels, Belgium
| | - S Panknin
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | - L Paul
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - J A Pepper
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - C Pérez de los Heros
- Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - C Pfendner
- Department of Physics and Center for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, Ohio 43210, USA
| | - D Pieloth
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - N Pirk
- DESY, D-15735 Zeuthen, Germany
| | - J Posselt
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - P B Price
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - G T Przybylski
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - L Rädel
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - K Rawlins
- Department of Physics and Astronomy, University of Alaska Anchorage, 3211 Providence Drive, Anchorage, Alaska 99508, USA
| | - P Redl
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - E Resconi
- T.U. Munich, D-85748 Garching, Germany
| | - W Rhode
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - M Ribordy
- Laboratory for High Energy Physics, École Polytechnique Fédérale, CH-1015 Lausanne, Switzerland
| | - M Richman
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - B Riedel
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - J P Rodrigues
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - C Rott
- Department of Physics and Center for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, Ohio 43210, USA
| | - T Ruhe
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - B Ruzybayev
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - D Ryckbosch
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - S M Saba
- Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - T Salameh
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - H-G Sander
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - M Santander
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - S Sarkar
- Department of Physics, University of Oxford, 1 Keble Road, Oxford OX1 3NP, United Kingdom
| | - K Schatto
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - M Scheel
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - F Scheriau
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - T Schmidt
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - M Schmitz
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - S Schoenen
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - S Schöneberg
- Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - L Schönherr
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | | | - A Schukraft
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - L Schulte
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | - O Schulz
- T.U. Munich, D-85748 Garching, Germany
| | - D Seckel
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - S H Seo
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - Y Sestayo
- T.U. Munich, D-85748 Garching, Germany
| | - S Seunarine
- Department of Physics, University of Wisconsin, River Falls, Wisconsin 54022, USA
| | - C Sheremata
- Department of Physics, University of Alberta, Edmonton, Alberta T6G 2G7, Canada
| | - M W E Smith
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - M Soiron
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - D Soldin
- Department of Physics, University of Wuppertal, D-42119 Wuppertal, Germany
| | - G M Spiczak
- Department of Physics, University of Wisconsin, River Falls, Wisconsin 54022, USA
| | | | - M Stamatikos
- Department of Physics and Center for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, Ohio 43210, USA
| | - T Stanev
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - A Stasik
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | - T Stezelberger
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - R G Stokstad
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - A Stößl
- DESY, D-15735 Zeuthen, Germany
| | - E A Strahler
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - R Ström
- Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - G W Sullivan
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - H Taavola
- Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden
| | - I Taboada
- School of Physics and Center for Relativistic Astrophysics, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
| | - A Tamburro
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - S Ter-Antonyan
- Department of Physics, Southern University, Baton Rouge, Louisiana 70813, USA
| | - S Tilav
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - P A Toale
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - S Toscano
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - M Usner
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | - D van der Drift
- Department of Physics, University of California, Berkeley, California 94720, USA and Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - N van Eijndhoven
- Vrije Universiteit Brussel, Dienst ELEM, B-1050 Brussels, Belgium
| | - A Van Overloop
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - J van Santen
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - M Vehring
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - M Voge
- Physikalisches Institut, Universität Bonn, Nussallee 12, D-53115 Bonn, Germany
| | - M Vraeghe
- Department of Physics and Astronomy, University of Gent, B-9000 Gent, Belgium
| | - C Walck
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - T Waldenmaier
- Institut für Physik, Humboldt-Universität zu Berlin, D-12489 Berlin, Germany
| | - M Wallraff
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - R Wasserman
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Ch Weaver
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - M Wellons
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - C Wendt
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - S Westerhoff
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - N Whitehorn
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - K Wiebe
- Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany
| | - C H Wiebusch
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - D R Williams
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - H Wissing
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - M Wolf
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
| | - T R Wood
- Department of Physics, University of Alberta, Edmonton, Alberta T6G 2G7, Canada
| | - K Woschnagg
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - C Xu
- Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA
| | - D L Xu
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - X W Xu
- Department of Physics, Southern University, Baton Rouge, Louisiana 70813, USA
| | | | - G Yodh
- Department of Physics and Astronomy, University of California, Irvine, California 92697, USA
| | - S Yoshida
- Department of Physics, Chiba University, Chiba 263-8522, Japan
| | - P Zarzhitsky
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - J Ziemann
- Department of Physics, TU Dortmund University, D-44221 Dortmund, Germany
| | - S Zierke
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - A Zilles
- III. Physikalisches Institut, RWTH Aachen University, D-52056 Aachen, Germany
| | - M Zoll
- Oskar Klein Centre and Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
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Aartsen MG, Abbasi R, Abdou Y, Ackermann M, Adams J, Aguilar JA, Ahlers M, Altmann D, Auffenberg J, Bai X, Baker M, Barwick SW, Baum V, Bay R, Beattie K, Beatty JJ, Bechet S, Becker Tjus J, Becker KH, Bell M, Benabderrahmane ML, BenZvi S, Berdermann J, Berghaus P, Berley D, Bernardini E, Bernhard A, Bertrand D, Besson DZ, Bindig D, Bissok M, Blaufuss E, Blumenthal J, Boersma DJ, Bohaichuk S, Bohm C, Bose D, Böser S, Botner O, Brayeur L, Brown AM, Bruijn R, Brunner J, Buitink S, Carson M, Casey J, Casier M, Chirkin D, Christy B, Clark K, Clevermann F, Cohen S, Cowen DF, Cruz Silva AH, Danninger M, Daughhetee J, Davis JC, De Clercq C, De Ridder S, Desiati P, de Vries-Uiterweerd G, de With M, DeYoung T, Díaz-Vélez JC, Dreyer J, Dunkman M, Eagan R, Eberhardt B, Eisch J, Ellsworth RW, Engdegård O, Euler S, Evenson PA, Fadiran O, Fazely AR, Fedynitch A, Feintzeig J, Feusels T, Filimonov K, Finley C, Fischer-Wasels T, Flis S, Franckowiak A, Franke R, Frantzen K, Fuchs T, Gaisser TK, Gallagher J, Gerhardt L, Gladstone L, Glüsenkamp T, Goldschmidt A, Golup G, Goodman JA, Góra D, Grant D, Groß A, Gurtner M, Ha C, Haj Ismail A, Hallgren A, Halzen F, Hanson K, Heereman D, Heimann P, Heinen D, Helbing K, Hellauer R, Hickford S, Hill GC, Hoffman KD, Hoffmann R, Homeier A, Hoshina K, Huelsnitz W, Hulth PO, Hultqvist K, Hussain S, Ishihara A, Jacobi E, Jacobsen J, Japaridze GS, Jero K, Jlelati O, Kaminsky B, Kappes A, Karg T, Karle A, Kelley JL, Kiryluk J, Kislat F, Kläs J, Klein SR, Köhne JH, Kohnen G, Kolanoski H, Köpke L, Kopper C, Kopper S, Koskinen DJ, Kowalski M, Krasberg M, Kroll G, Kunnen J, Kurahashi N, Kuwabara T, Labare M, Landsman H, Larson MJ, Lesiak-Bzdak M, Leute J, Lünemann J, Madsen J, Maruyama R, Mase K, Matis HS, McNally F, Meagher K, Merck M, Mészáros P, Meures T, Miarecki S, Middell E, Milke N, Miller J, Mohrmann L, Montaruli T, Morse R, Nahnhauer R, Naumann U, Niederhausen H, Nowicki SC, Nygren DR, Obertacke A, Odrowski S, Olivas A, Olivo M, O'Murchadha A, Paul L, Pepper JA, Pérez de los Heros C, Pfendner C, Pieloth D, Pirk N, Posselt J, Price PB, Przybylski GT, Rädel L, Rawlins K, Redl P, Resconi E, Rhode W, Ribordy M, Richman M, Riedel B, Rodrigues JP, Rott C, Ruhe T, Ruzybayev B, Ryckbosch D, Saba SM, Salameh T, Sander HG, Santander M, Sarkar S, Schatto K, Scheel M, Scheriau F, Schmidt T, Schmitz M, Schoenen S, Schöneberg S, Schönherr L, Schönwald A, Schukraft A, Schulte L, Schulz O, Seckel D, Seo SH, Sestayo Y, Seunarine S, Sheremata C, Smith MWE, Soiron M, Soldin D, Spiczak GM, Spiering C, Stamatikos M, Stanev T, Stasik A, Stezelberger T, Stokstad RG, Stößl A, Strahler EA, Ström R, Sullivan GW, Taavola H, Taboada I, Tamburro A, Ter-Antonyan S, Tilav S, Toale PA, Toscano S, Usner M, van der Drift D, van Eijndhoven N, Van Overloop A, van Santen J, Vehring M, Voge M, Vraeghe M, Walck C, Waldenmaier T, Wallraff M, Wasserman R, Weaver C, Wellons M, Wendt C, Westerhoff S, Whitehorn N, Wiebe K, Wiebusch CH, Williams DR, Wissing H, Wolf M, Wood TR, Woschnagg K, Xu C, Xu DL, Xu XW, Yanez JP, Yodh G, Yoshida S, Zarzhitsky P, Ziemann J, Zierke S, Zilles A, Zoll M. Search for dark matter annihilations in the sun with the 79-string IceCube detector. Phys Rev Lett 2013; 110:131302. [PMID: 23581307 DOI: 10.1103/physrevlett.110.131302] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2012] [Revised: 02/20/2013] [Indexed: 06/02/2023]
Abstract
We have performed a search for muon neutrinos from dark matter annihilation in the center of the Sun with the 79-string configuration of the IceCube neutrino telescope. For the first time, the DeepCore subarray is included in the analysis, lowering the energy threshold and extending the search to the austral summer. The 317 days of data collected between June 2010 and May 2011 are consistent with the expected background from atmospheric muons and neutrinos. Upper limits are set on the dark matter annihilation rate, with conversions to limits on spin-dependent and spin-independent scattering cross sections of weakly interacting massive particles (WIMPs) on protons, for WIMP masses in the range 20-5000 GeV/c2. These are the most stringent spin-dependent WIMP-proton cross section limits to date above 35 GeV/c2 for most WIMP models.
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Affiliation(s)
- M G Aartsen
- School of Chemistry and Physics, University of Adelaide, Adelaide, South Australia 5005, Australia
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Petrie DA, De Maio V, Stiell IG, Dreyer J, Martin M, O'brien JA. Factors affecting survival after prehospital asystolic cardiac arrest in a Basic Life Support-Defibrillation system. CAN J EMERG MED 2012; 3:186-92. [PMID: 17610782 DOI: 10.1017/s1481803500005522] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVES Previous studies have shown a low but meaningful survival rate in cases of prehospital cardiac arrest with an initial rhythm of asystole. There may be, however, an identifiable subgroup in which resuscitation efforts are futile. This study identified potential field criteria for predicting 100% nonsurvival when the presenting rhythm is asystole in a Basic Life Support-Defibrillation (BLS-D) system. METHODS This prospective cohort study, a component of Phases I and II of the Ontario Prehospital Advanced Life Support (OPALS) Study, was conducted in 21 Ontario communities with BLS-D level of care, and included all adult arrests of presumed cardiac etiology according to the Utstein Style Guidelines. Analyses included descriptive and appropriate univariate tests, as well as multivariate stepwise logistic regression to determine predictors of survival. RESULTS From 1991 to 1997, 9899 consecutive cardiac arrest cases with the following characteristics: male (67.2%), bystander-witnessed (44.7%), bystander CPR (14.2%), call response interval (CRI) </= 8 minutes (82%) and overall survival (4.3%) were enrolled. Of 9529 cases with available rhythm strip recordings, initial arrest rhythms were asystole in 40.8%, pulseless electrical activity in 21.2% and ventricular fibrillation or ventricular tachycardia in 38%. Of 3888 asystolic patients, 9 (0.2%) survived to discharge; 3 of these cases were unwitnessed arrests with no bystander CPR. There were no survivors if the CRI exceeded 8 minutes. Logistic regression analysis demonstrated that independent predictors of survival to admission were "CRI in minutes" (odds ratio [OR] = 0.87; 95% confidence interval [CI], 0.77-0.98) and "bystander-witnessed" (OR = 2.6; 95% CI, 1.5-4.4). CONCLUSIONS In a BLS-D system, there is a very low but measurable survival rate for prehospital asystolic cardiac arrest. CRIs of over 8 minutes were associated with 100% nonsurvival, whereas unwitnessed arrests with no bystander CPR were not. These data add to the growing literature that will help guide ethical decision-making for protocol development in emergency medical services systems.
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Affiliation(s)
- D A Petrie
- Ontario Prehospital Advanced Life Support (OPALS) Study Group
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Vannucci M, Kreisner P, Dreyer J, Oliveira M. Histological and physical analysis in neoformed bone by distraction osteogenesis: preliminary report. Br J Oral Maxillofac Surg 2011. [DOI: 10.1016/j.bjoms.2011.03.241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Abbasi R, Abdou Y, Abu-Zayyad T, Adams J, Aguilar JA, Ahlers M, Andeen K, Auffenberg J, Bai X, Baker M, Barwick SW, Bay R, Bazo Alba JL, Beattie K, Beatty JJ, Bechet S, Becker JK, Becker KH, Benabderrahmane ML, BenZvi S, Berdermann J, Berghaus P, Berley D, Bernardini E, Bertrand D, Besson DZ, Bindig D, Bissok M, Blaufuss E, Blumenthal J, Boersma DJ, Bohm C, Bose D, Böser S, Botner O, Braun J, Brown AM, Buitink S, Carson M, Chirkin D, Christy B, Clem J, Clevermann F, Cohen S, Colnard C, Cowen DF, D'Agostino MV, Danninger M, Daughhetee J, Davis JC, De Clercq C, Demirörs L, Depaepe O, Descamps F, Desiati P, de Vries-Uiterweerd G, DeYoung T, Díaz-Vélez JC, Dierckxsens M, Dreyer J, Dumm JP, Ehrlich R, Eisch J, Ellsworth RW, Engdegård O, Euler S, Evenson PA, Fadiran O, Fazely AR, Fedynitch A, Feusels T, Filimonov K, Finley C, Fischer-Wasels T, Foerster MM, Fox BD, Franckowiak A, Franke R, Gaisser TK, Gallagher J, Geisler M, Gerhardt L, Gladstone L, Glüsenkamp T, Goldschmidt A, Goodman JA, Grant D, Griesel T, Gross A, Grullon S, Gurtner M, Ha C, Hallgren A, Halzen F, Han K, Hanson K, Heinen D, Helbing K, Herquet P, Hickford S, Hill GC, Hoffman KD, Homeier A, Hoshina K, Hubert D, Huelsnitz W, Hülss JP, Hulth PO, Hultqvist K, Hussain S, Ishihara A, Jacobsen J, Japaridze GS, Johansson H, Joseph JM, Kampert KH, Kappes A, Karg T, Karle A, Kelley JL, Kemming N, Kenny P, Kiryluk J, Kislat F, Klein SR, Köhne JH, Kohnen G, Kolanoski H, Köpke L, Kopper S, Koskinen DJ, Kowalski M, Kowarik T, Krasberg M, Krings T, Kroll G, Kuehn K, Kuwabara T, Labare M, Lafebre S, Laihem K, Landsman H, Larson MJ, Lauer R, Lehmann R, Lünemann J, Madsen J, Majumdar P, Marotta A, Maruyama R, Mase K, Matis HS, Meagher K, Merck M, Mészáros P, Meures T, Middell E, Milke N, Miller J, Montaruli T, Morse R, Movit SM, Nahnhauer R, Nam JW, Naumann U, Niessen P, Nygren DR, Odrowski S, Olivas A, Olivo M, O'Murchadha A, Ono M, Panknin S, Paul L, Pérez de los Heros C, Petrovic J, Piegsa A, Pieloth D, Porrata R, Posselt J, Price PB, Prikockis M, Przybylski GT, Rawlins K, Redl P, Resconi E, Rhode W, Ribordy M, Rizzo A, Rodrigues JP, Roth P, Rothmaier F, Rott C, Ruhe T, Rutledge D, Ruzybayev B, Ryckbosch D, Sander HG, Santander M, Sarkar S, Schatto K, Schmidt T, Schoenwald A, Schukraft A, Schultes A, Schulz O, Schunck M, Seckel D, Semburg B, Seo SH, Sestayo Y, Seunarine S, Silvestri A, Slipak A, Spiczak GM, Spiering C, Stamatikos M, Stanev T, Stephens G, Stezelberger T, Stokstad RG, Stoyanov S, Strahler EA, Straszheim T, Sullivan GW, Swillens Q, Taavola H, Taboada I, Tamburro A, Tarasova O, Tepe A, Ter-Antonyan S, Tilav S, Toale PA, Toscano S, Tosi D, Turčan D, van Eijndhoven N, Vandenbroucke J, Van Overloop A, van Santen J, Vehring M, Voge M, Voigt B, Walck C, Waldenmaier T, Wallraff M, Walter M, Weaver C, Wendt C, Westerhoff S, Whitehorn N, Wiebe K, Wiebusch CH, Williams DR, Wischnewski R, Wissing H, Wolf M, Woschnagg K, Xu C, Xu XW, Yodh G, Yoshida S, Zarzhitsky P. Limits on neutrino emission from gamma-ray bursts with the 40 string IceCube detector. Phys Rev Lett 2011; 106:141101. [PMID: 21561178 DOI: 10.1103/physrevlett.106.141101] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2011] [Indexed: 05/30/2023]
Abstract
IceCube has become the first neutrino telescope with a sensitivity below the TeV neutrino flux predicted from gamma-ray bursts if gamma-ray bursts are responsible for the observed cosmic-ray flux above 10(18) eV. Two separate analyses using the half-complete IceCube detector, one a dedicated search for neutrinos from pγ interactions in the prompt phase of the gamma-ray burst fireball and the other a generic search for any neutrino emission from these sources over a wide range of energies and emission times, produced no evidence for neutrino emission, excluding prevailing models at 90% confidence.
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Affiliation(s)
- R Abbasi
- Department of Physics, University of Wisconsin, Madison, Wisconsin 53706, USA
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Abbasi R, Abdou Y, Abu-Zayyad T, Adams J, Aguilar JA, Ahlers M, Andeen K, Auffenberg J, Bai X, Baker M, Barwick SW, Bay R, Bazo Alba JL, Beattie K, Beatty JJ, Bechet S, Becker JK, Becker KH, Benabderrahmane ML, Berdermann J, Berghaus P, Berley D, Bernardini E, Bertrand D, Besson DZ, Bissok M, Blaufuss E, Boersma DJ, Bohm C, Bolmont J, Botner O, Bradley L, Braun J, Breder D, Carson M, Castermans T, Chirkin D, Christy B, Clem J, Cohen S, Cowen DF, D’Agostino MV, Danninger M, Day CT, De Clercq C, Demirörs L, Depaepe O, Descamps F, Desiati P, de Vries-Uiterweerd G, DeYoung T, Díaz-Vélez JC, Dreyer J, Dumm JP, Duvoort MR, Edwards WR, Ehrlich R, Eisch J, Ellsworth RW, Engdegård O, Euler S, Evenson PA, Fadiran O, Fazely AR, Feusels T, Filimonov K, Finley C, Foerster MM, Fox BD, Franckowiak A, Franke R, Gaisser TK, Gallagher J, Ganugapati R, Gerhardt L, Gladstone L, Goldschmidt A, Goodman JA, Gozzini R, Grant D, Griesel T, Groß A, Grullon S, Gunasingha RM, Gurtner M, Ha C, Hallgren A, Halzen F, Han K, Hanson K, Hasegawa Y, Helbing K, Herquet P, Hickford S, Hill GC, Hoffman KD, Homeier A, Hoshina K, Hubert D, Huelsnitz W, Hülß JP, Hulth PO, Hultqvist K, Hussain S, Imlay RL, Inaba M, Ishihara A, Jacobsen J, Japaridze GS, Johansson H, Joseph JM, Kampert KH, Kappes A, Karg T, Karle A, Kelley JL, Kemming N, Kenny P, Kiryluk J, Kislat F, Klein SR, Knops S, Kohnen G, Kolanoski H, Köpke L, Koskinen DJ, Kowalski M, Kowarik T, Krasberg M, Krings T, Kroll G, Kuehn K, Kuwabara T, Labare M, Lafebre S, Laihem K, Landsman H, Lauer R, Lehmann R, Lennarz D, Lucke A, Lundberg J, Lünemann J, Madsen J, Majumdar P, Maruyama R, Mase K, Matis HS, McParland CP, Meagher K, Merck M, Mészáros P, Meures T, Middell E, Milke N, Miyamoto H, Montaruli T, Morse R, Movit SM, Nahnhauer R, Nam JW, Nießen P, Nygren DR, Odrowski S, Olivas A, Olivo M, Ono M, Panknin S, Patton S, Paul L, Pérez de los Heros C, Petrovic J, Piegsa A, Pieloth D, Pohl AC, Porrata R, Potthoff N, Price PB, Prikockis M, Przybylski GT, Rawlins K, Redl P, Resconi E, Rhode W, Ribordy M, Rizzo A, Rodrigues JP, Roth P, Rothmaier F, Rott C, Roucelle C, Rutledge D, Ruzybayev B, Ryckbosch D, Sander HG, Sarkar S, Schatto K, Schlenstedt S, Schmidt T, Schneider D, Schukraft A, Schulz O, Schunck M, Seckel D, Semburg B, Seo SH, Sestayo Y, Seunarine S, Silvestri A, Slipak A, Spiczak GM, Spiering C, Stamatikos M, Stanev T, Stephens G, Stezelberger T, Stokstad RG, Stoufer MC, Stoyanov S, Strahler EA, Straszheim T, Sulanke KH, Sullivan GW, Swillens Q, Taboada I, Tamburro A, Tarasova O, Tepe A, Ter-Antonyan S, Terranova C, Tilav S, Toale PA, Tooker J, Tosi D, Turčan D, van Eijndhoven N, Vandenbroucke J, Van Overloop A, van Santen J, Voigt B, Walck C, Waldenmaier T, Wallraff M, Walter M, Wendt C, Westerhoff S, Whitehorn N, Wiebe K, Wiebusch CH, Wiedemann A, Wikström G, Williams DR, Wischnewski R, Wissing H, Woschnagg K, Xu C, Xu XW, Yodh G, Yoshida S. Limits on a muon flux from Kaluza-Klein dark matter annihilations in the Sun from the IceCube 22-string detector. Int J Clin Exp Med 2010. [DOI: 10.1103/physrevd.81.057101] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Abbasi R, Abdou Y, Abu-Zayyad T, Adams J, Aguilar JA, Ahlers M, Andeen K, Auffenberg J, Bai X, Baker M, Barwick SW, Bay R, Bazo Alba JL, Beattie K, Beatty JJ, Bechet S, Becker JK, Becker KH, Benabderrahmane ML, Berdermann J, Berghaus P, Berley D, Bernardini E, Bertrand D, Besson DZ, Bissok M, Blaufuss E, Boersma DJ, Bohm C, Botner O, Bradley L, Braun J, Breder D, Carson M, Castermans T, Chirkin D, Christy B, Clem J, Cohen S, Cowen DF, D'Agostino MV, Danninger M, Day CT, De Clercq C, Demirörs L, Depaepe O, Descamps F, Desiati P, de Vries-Uiterweerd G, DeYoung T, Díaz-Vélez JC, Dreyer J, Dumm JP, Duvoort MR, Edwards WR, Ehrlich R, Eisch J, Ellsworth RW, Engdegård O, Euler S, Evenson PA, Fadiran O, Fazely AR, Feusels T, Filimonov K, Finley C, Foerster MM, Fox BD, Franckowiak A, Franke R, Gaisser TK, Gallagher J, Ganugapati R, Gerhardt L, Gladstone L, Goldschmidt A, Goodman JA, Gozzini R, Grant D, Griesel T, Gross A, Grullon S, Gunasingha RM, Gurtner M, Ha C, Hallgren A, Halzen F, Han K, Hanson K, Hasegawa Y, Helbing K, Herquet P, Hickford S, Hill GC, Hoffman KD, Homeier A, Hoshina K, Hubert D, Huelsnitz W, Hülss JP, Hulth PO, Hultqvist K, Hussain S, Imlay RL, Inaba M, Ishihara A, Jacobsen J, Japaridze GS, Johansson H, Joseph JM, Kampert KH, Kappes A, Karg T, Karle A, Kelley JL, Kemming N, Kenny P, Kiryluk J, Kislat F, Klein SR, Knops S, Kohnen G, Kolanoski H, Köpke L, Koskinen DJ, Kowalski M, Kowarik T, Krasberg M, Krings T, Kroll G, Kuehn K, Kuwabara T, Labare M, Lafebre S, Laihem K, Landsman H, Lauer R, Lehmann R, Lennarz D, Lundberg J, Lünemann J, Madsen J, Majumdar P, Maruyama R, Mase K, Matis HS, McParland CP, Meagher K, Merck M, Mészáros P, Meures T, Middell E, Milke N, Miyamoto H, Montaruli T, Morse R, Movit SM, Nahnhauer R, Nam JW, Niessen P, Nygren DR, Odrowski S, Olivas A, Olivo M, Ono M, Panknin S, Patton S, Paul L, Pérez de los Heros C, Petrovic J, Piegsa A, Pieloth D, Pohl AC, Porrata R, Potthoff N, Price PB, Prikockis M, Przybylski GT, Rawlins K, Redl P, Resconi E, Rhode W, Ribordy M, Rizzo A, Rodrigues JP, Roth P, Rothmaier F, Rott C, Roucelle C, Rutledge D, Ruzybayev B, Ryckbosch D, Sander HG, Sarkar S, Schatto K, Schlenstedt S, Schmidt T, Schneider D, Schukraft A, Schulz O, Schunck M, Seckel D, Semburg B, Seo SH, Sestayo Y, Seunarine S, Silvestri A, Slipak A, Spiczak GM, Spiering C, Stamatikos M, Stanev T, Stephens G, Stezelberger T, Stokstad RG, Stoufer MC, Stoyanov S, Strahler EA, Straszheim T, Sullivan GW, Swillens Q, Taboada I, Tamburro A, Tarasova O, Tepe A, Ter-Antonyan S, Terranova C, Tilav S, Toale PA, Tooker J, Tosi D, Turcan D, van Eijndhoven N, Vandenbroucke J, Van Overloop A, van Santen J, Voigt B, Walck C, Waldenmaier T, Wallraff M, Walter M, Wendt C, Westerhoff S, Whitehorn N, Wiebe K, Wiebusch CH, Wiedemann A, Wikström G, Williams DR, Wischnewski R, Wissing H, Woschnagg K, Xu C, Xu XW, Yodh G, Yoshida S. Extending the search for neutrino point sources with IceCube above the horizon. Phys Rev Lett 2009; 103:221102. [PMID: 20366087 DOI: 10.1103/physrevlett.103.221102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2009] [Indexed: 05/29/2023]
Abstract
Point source searches with the IceCube neutrino telescope have been restricted to one hemisphere, due to the exclusive selection of upward going events as a way of rejecting the atmospheric muon background. We show that the region above the horizon can be included by suppressing the background through energy-sensitive cuts. This improves the sensitivity above PeV energies, previously not accessible for declinations of more than a few degrees below the horizon due to the absorption of neutrinos in Earth. We present results based on data collected with 22 strings of IceCube, extending its field of view and energy reach for point source searches. No significant excess above the atmospheric background is observed in a sky scan and in tests of source candidates. Upper limits are reported, which for the first time cover point sources in the southern sky up to EeV energies.
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Affiliation(s)
- R Abbasi
- Department of Physics, University of Wisconsin, Madison, Wisconsin 53706, USA
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Abbasi R, Abdou Y, Ackermann M, Adams J, Ahlers M, Andeen K, Auffenberg J, Bai X, Baker M, Barwick SW, Bay R, Bazo Alba JL, Beattie K, Beatty JJ, Bechet S, Becker JK, Becker KH, Benabderrahmane ML, Berdermann J, Berghaus P, Berley D, Bernardini E, Bertrand D, Besson DZ, Bissok M, Blaufuss E, Boersma DJ, Bohm C, Bolmont J, Böser S, Botner O, Bradley L, Braun J, Breder D, Burgess T, Castermans T, Chirkin D, Christy B, Clem J, Cohen S, Cowen DF, D'Agostino MV, Danninger M, Day CT, De Clercq C, Demirörs L, Depaepe O, Descamps F, Desiati P, de Vries-Uiterweerd G, Deyoung T, Diaz-Velez JC, Dreyer J, Dumm JP, Duvoort MR, Edwards WR, Ehrlich R, Eisch J, Ellsworth RW, Engdegård O, Euler S, Evenson PA, Fadiran O, Fazely AR, Feusels T, Filimonov K, Finley C, Foerster MM, Fox BD, Franckowiak A, Franke R, Gaisser TK, Gallagher J, Ganugapati R, Gerhardt L, Gladstone L, Goldschmidt A, Goodman JA, Gozzini R, Grant D, Griesel T, Gross A, Grullon S, Gunasingha RM, Gurtner M, Ha C, Hallgren A, Halzen F, Han K, Hanson K, Hasegawa Y, Heise J, Helbing K, Herquet P, Hickford S, Hill GC, Hoffman KD, Hoshina K, Hubert D, Huelsnitz W, Hülss JP, Hulth PO, Hultqvist K, Hussain S, Imlay RL, Inaba M, Ishihara A, Jacobsen J, Japaridze GS, Johansson H, Joseph JM, Kampert KH, Kappes A, Karg T, Karle A, Kelley JL, Kenny P, Kiryluk J, Kislat F, Klein SR, Klepser S, Knops S, Kohnen G, Kolanoski H, Köpke L, Kowalski M, Kowarik T, Krasberg M, Kuehn K, Kuwabara T, Labare M, Lafebre S, Laihem K, Landsman H, Lauer R, Leich H, Lennarz D, Lucke A, Lundberg J, Lünemann J, Madsen J, Majumdar P, Maruyama R, Mase K, Matis HS, McParland CP, Meagher K, Merck M, Mészáros P, Middell E, Milke N, Miyamoto H, Mohr A, Montaruli T, Morse R, Movit SM, Münich K, Nahnhauer R, Nam JW, Niessen P, Nygren DR, Odrowski S, Olivas A, Olivo M, Ono M, Panknin S, Patton S, Pérez de Los Heros C, Petrovic J, Piegsa A, Pieloth D, Pohl AC, Porrata R, Potthoff N, Price PB, Prikockis M, Przybylski GT, Rawlins K, Redl P, Resconi E, Rhode W, Ribordy M, Rizzo A, Rodrigues JP, Roth P, Rothmaier F, Rott C, Roucelle C, Rutledge D, Ryckbosch D, Sander HG, Sarkar S, Satalecka K, Schlenstedt S, Schmidt T, Schneider D, Schukraft A, Schulz O, Schunck M, Seckel D, Semburg B, Seo SH, Sestayo Y, Seunarine S, Silvestri A, Slipak A, Spiczak GM, Spiering C, Stamatikos M, Stanev T, Stephens G, Stezelberger T, Stokstad RG, Stoufer MC, Stoyanov S, Strahler EA, Straszheim T, Sulanke KH, Sullivan GW, Swillens Q, Taboada I, Tarasova O, Tepe A, Ter-Antonyan S, Terranova C, Tilav S, Tluczykont M, Toale PA, Tosi D, Turcan D, van Eijndhoven N, Vandenbroucke J, Van Overloop A, Voigt B, Walck C, Waldenmaier T, Walter M, Wendt C, Westerhoff S, Whitehorn N, Wiebusch CH, Wiedemann A, Wikström G, Williams DR, Wischnewski R, Wissing H, Woschnagg K, Xu XW, Yodh G, Yoshida S. Limits on a muon flux from neutralino annihilations in the sun with the IceCube 22-string detector. Phys Rev Lett 2009; 102:201302. [PMID: 19519015 DOI: 10.1103/physrevlett.102.201302] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2009] [Revised: 03/27/2009] [Indexed: 05/27/2023]
Abstract
A search for muon neutrinos from neutralino annihilations in the Sun has been performed with the IceCube 22-string neutrino detector using data collected in 104.3 days of live time in 2007. No excess over the expected atmospheric background has been observed. Upper limits have been obtained on the annihilation rate of captured neutralinos in the Sun and converted to limits on the weakly interacting massive particle (WIMP) proton cross sections for WIMP masses in the range 250-5000 GeV. These results are the most stringent limits to date on neutralino annihilation in the Sun.
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Affiliation(s)
- R Abbasi
- Department of Physics, University of Wisconsin, Madison, Wisconsin 53706, USA
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Kozich V, Dreyer J, Werncke W. Mode-selective vibrational redistribution after spectrally selective N–H stretching mode excitation in intermolecular hydrogen bonds. J Chem Phys 2009; 130:034505. [DOI: 10.1063/1.3062809] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
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Stiell IG, Nesbitt LP, Pickett W, Munkley D, Spaite DW, Banek J, Field B, Luinstra-Toohey L, Maloney J, Dreyer J, Lyver M, Campeau T, Wells GA. The OPALS Major Trauma Study: impact of advanced life-support on survival and morbidity. CMAJ 2008; 178:1141-52. [PMID: 18427089 PMCID: PMC2292763 DOI: 10.1503/cmaj.071154] [Citation(s) in RCA: 191] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
BACKGROUND To date, the benefit of prehospital advanced life-support programs on trauma-related mortality and morbidity has not been established METHODS The Ontario Prehospital Advanced Life Support (OPALS) Major Trauma Study was a before-after systemwide controlled clinical trial conducted in 17 cities. We enrolled adult patients who had experienced major trauma in a basic life-support phase and a subsequent advanced life-support phase (during which paramedics were able to perform endotracheal intubation and administer fluids and drugs intravenously). The primary outcome was survival to hospital discharge. RESULTS Among the 2867 patients enrolled in the basic life-support (n = 1373) and advanced life-support (n = 1494) phases, characteristics were similar, including mean age (44.8 v. 47.5 years), frequency of blunt injury (92.0% v. 91.4%), median injury severity score (24 v. 22) and percentage of patients with Glasgow Coma Scale score less than 9 (27.2% v. 22.1%). Survival did not differ overall (81.1% among patients in the advanced life-support phase v. 81.8% among those in the basic life-support phase; p = 0.65). Among patients with Glasgow Coma Scale score less than 9, survival was lower among those in the advanced life-support phase (50.9% v. 60.0%; p = 0.02). The adjusted odds of death for the advanced life-support v. basic life-support phases were nonsignificant (1.2, 95% confidence interval 0.9-1.7; p = 0.16). INTERPRETATION The OPALS Major Trauma Study showed that systemwide implementation of full advanced life-support programs did not decrease mortality or morbidity for major trauma patients. We also found that during the advanced life-support phase, mortality was greater among patients with Glasgow Coma Scale scores less than 9. We believe that emergency medical services should carefully re-evaluate the indications for and application of prehospital advanced life-support measures for patients who have experienced major trauma.
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Affiliation(s)
- Ian G Stiell
- The Department of Emergency Medicine, University of Ottawa, and the Clinical Epidemiology Program, Ottawa Health Research Institute, Ottawa, Ont
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Dreyer J, Kozich V, Werncke W. Tuning intramolecular anharmonic vibrational coupling in 4-nitroaniline by solvent-solute interaction. J Chem Phys 2007; 127:234505. [DOI: 10.1063/1.2806804] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Anderson DR, Kahn SR, Rodger MA, Kovacs MJ, Morris T, Hirsch A, Lang E, Stiell I, Kovacs G, Dreyer J, Dennie C, Cartier Y, Barnes D, Burton E, Pleasance S, Skedgel C, O'Rouke K, Wells PS. Computed tomographic pulmonary angiography vs ventilation-perfusion lung scanning in patients with suspected pulmonary embolism: a randomized controlled trial. JAMA 2007; 298:2743-53. [PMID: 18165667 DOI: 10.1001/jama.298.23.2743] [Citation(s) in RCA: 358] [Impact Index Per Article: 21.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
CONTEXT Ventilation-perfusion (V(dot)Q(dot) lung scanning and computed tomographic pulmonary angiography (CTPA) are widely used imaging procedures for the evaluation of patients with suspected pulmonary embolism. Ventilation-perfusion scanning has been largely replaced by CTPA in many centers despite limited comparative formal evaluations and concerns about CTPA's low sensitivity (ie, chance of missing clinically important pulmonary embuli). OBJECTIVES To determine whether CTPA may be relied upon as a safe alternative to V(dot)Q(dot scanning as the initial pulmonary imaging procedure for excluding the diagnosis of pulmonary embolism in acutely symptomatic patients. DESIGN, SETTING, AND PARTICIPANTS Randomized, single-blinded noninferiority clinical trial performed at 4 Canadian and 1 US tertiary care centers between May 2001 and April 2005 and involving 1417 patients considered likely to have acute pulmonary embolism based on a Wells clinical model score of 4.5 or greater or a positive D-dimer assay result. INTERVENTION Patients were randomized to undergo either V(dot)Q(dot scanning or CTPA. Patients in whom pulmonary embolism was considered excluded did not receive antithrombotic therapy and were followed up for a 3-month period. MAIN OUTCOME MEASURE The primary outcome was the subsequent development of symptomatic pulmonary embolism or proximal deep vein thrombosis in patients in whom pulmonary embolism had initially been excluded. RESULTS Seven hundred one patients were randomized to CTPA and 716 to V(dot)Q(dot scanning. Of these, 133 patients (19.2%) in the CTPA group vs 101 (14.2%) in the V(dot)Q(dot scan group were diagnosed as having pulmonary embolism in the initial evaluation period (difference, 5.0%; 95% confidence interval [CI], 1.1% to 8.9%) and were treated with anticoagulant therapy. Of those in whom pulmonary embolism was considered excluded, 2 of 561 patients (0.4%) randomized to CTPA vs 6 of 611 patients (1.0%) undergoing V(dot)Q(dot scanning developed venous thromboembolism in follow-up (difference, -0.6%; 95% CI, -1.6% to 0.3%) including one patient with fatal pulmonary embolism in the V(dot)Q(dot group. CONCLUSIONS In this study, CTPA was not inferior to V(dot)Q(dot scanning in ruling out pulmonary embolism. However, significantly more patients were diagnosed with pulmonary embolism using the CTPA approach. Further research is required to determine whether all pulmonary emboli detected by CTPA should be managed with anticoagulant therapy. TRIAL REGISTRATION isrctn.org Identifier: ISRCTN65486961.
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Affiliation(s)
- David R Anderson
- Department of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada.
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Braun M, Korff Schmising CV, Kiel M, Zhavoronkov N, Dreyer J, Bargheer M, Elsaesser T, Root C, Schrader TE, Gilch P, Zinth W, Woerner M. Ultrafast changes of molecular crystal structure induced by dipole solvation. Phys Rev Lett 2007; 98:248301. [PMID: 17677998 DOI: 10.1103/physrevlett.98.248301] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2006] [Indexed: 05/16/2023]
Abstract
Femtosecond photoexcitation of organic chromophores in a molecular crystal induces strong changes of the electronic dipole moment via intramolecular charge transfer as is evident from transient vibrational spectra. The structural response of the crystal to the dipole change is mapped directly for the first time by ultrafast x-ray diffraction or diffuse scattering. Changes of diffracted and transmitted x-ray intensity demonstrate an angular rearrangement of molecules around excited dipoles following the 10 ps kinetics of charge transfer and leaving lattice plane spacings unchanged. Transient x-ray scattering is governed by solvation, masking changes of the chromophore molecular structure.
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Affiliation(s)
- M Braun
- BioMolekulare Optik and MAP, Department für Physik, Ludwig-Maximilians-Universität München, 80538 München, Germany
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Stiell IG, Spaite DW, Field B, Nesbitt LP, Munkley D, Maloney J, Dreyer J, Toohey LL, Campeau T, Dagnone E, Lyver M, Wells GA. Advanced life support for out-of-hospital respiratory distress. N Engl J Med 2007; 356:2156-64. [PMID: 17522399 DOI: 10.1056/nejmoa060334] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
BACKGROUND Respiratory distress is a common symptom of patients transported to hospitals by emergency medical services (EMS) personnel. The benefit of advanced life support for such patients has not been established. METHODS The Ontario Prehospital Advanced Life Support (OPALS) Study was a controlled clinical trial that was conducted in 15 cities before and after the implementation of a program to provide advanced life support for patients with out-of-hospital respiratory distress. Paramedics were trained in standard advanced life support, including endotracheal intubation and the administration of intravenous drugs. RESULTS The clinical characteristics of the 8138 patients in the two phases of the study were similar. During the first phase, no patients were treated by paramedics trained in advanced life support; during the second phase, 56.6% of patients received this treatment. Endotracheal intubation was performed in 1.4% of the patients, and intravenous drugs were administered to 15.0% during the second phase. This phase of the study was also marked by a substantial increase in the use of nebulized salbutamol and sublingual nitroglycerin for the relief of symptoms. The rate of death among all patients decreased significantly, from 14.3% to 12.4% (absolute difference, 1.9%; 95% confidence interval [CI], 0.4 to 3.4; P=0.01) from the basic-life-support phase to the advanced-life-support phase (adjusted odds ratio, 1.3; 95% CI, 1.1 to 1.5). CONCLUSIONS The addition of a specific regimen of out-of-hospital advanced-life-support interventions to an existing EMS system that provides basic life support was associated with a decrease in the rate of death of 1.9 percentage points among patients with respiratory distress.
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Affiliation(s)
- Ian G Stiell
- Department of Emergency Medicine, Ottawa Health Research Institute, University of Ottawa, Ottawa, ON, Canada
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Dreyer J, Zaric G, McLeod S, Anderson C, Carter M. Variability of Emergency Physician Time by Triage Category. Acad Emerg Med 2007. [DOI: 10.1197/j.aem.2007.03.1298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Dreyer J, Zaric G, McLeod S, Anderson C, Carter M. Predictors of Emergency Physician Workload. Acad Emerg Med 2007. [DOI: 10.1197/j.aem.2007.03.1297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Stiell I, Clement C, Grimshaw J, Brison R, Rowe B, Schull M, Lee J, Brehaut J, Letovsky E, MacPhail I, Shah A, Ross S, McKnight R, Dreyer J, Edmonds M, Rutledge T, Clarke A, Perry J, Wells G, Study Group. A Cluster Randomized Knowledge Transfer Trial in 4,457 Minor Head Injury Patients. Acad Emerg Med 2007. [DOI: 10.1197/j.aem.2007.03.941] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Achterberg A, Ackermann M, Adams J, Ahrens J, Andeen K, Atlee DW, Bahcall JN, Bai X, Baret B, Bartelt M, Barwick SW, Bay R, Beattie K, Becka T, Becker JK, Becker KH, Berghaus P, Berley D, Bernardini E, Bertrand D, Besson DZ, Blaufuss E, Boersma DJ, Bohm C, Bolmont J, Böser S, Botner O, Bouchta A, Braun J, Burgess C, Burgess T, Castermans T, Chirkin D, Christy B, Clem J, Cowen DF, D'Agostino MV, Davour A, Day CT, De Clercq C, Demirörs L, Descamps F, Desiati P, Deyoung T, Diaz-Velez JC, Dreyer J, Dumm JP, Duvoort MR, Edwards WR, Ehrlich R, Eisch J, Ellsworth RW, Evenson PA, Fadiran O, Fazely AR, Feser T, Filimonov K, Fox BD, Gaisser TK, Gallagher J, Ganugapati R, Geenen H, Gerhardt L, Goldschmidt A, Goodman JA, Gozzini R, Grullon S, Gross A, Gunasingha RM, Gurtner M, Hallgren A, Halzen F, Han K, Hanson K, Hardtke D, Hardtke R, Harenberg T, Hart JE, Hauschildt T, Hays D, Heise J, Helbing K, Hellwig M, Herquet P, Hill GC, Hodges J, Hoffman KD, Hommez B, Hoshina K, Hubert D, Hughey B, Hulth PO, Hultqvist K, Hundertmark S, Hülss JP, Ishihara A, Jacobsen J, Japaridze GS, Jones A, Joseph JM, Kampert KH, Karle A, Kawai H, Kelley JL, Kestel M, Kitamura N, Klein SR, Klepser S, Kohnen G, Kolanoski H, Köpke L, Krasberg M, Kuehn K, Landsman H, Leich H, Liubarsky I, Lundberg J, Madsen J, Mase K, Matis HS, McCauley T, McParland CP, Meli A, Messarius T, Mészáros P, Miyamoto H, Mokhtarani A, Montaruli T, Morey A, Morse R, Movit SM, Münich K, Nahnhauer R, Nam JW, Niessen P, Nygren DR, Ogelman H, Olbrechts P, Olivas A, Patton S, Peña-Garay C, Pérez de Los Heros C, Piegsa A, Pieloth D, Pohl AC, Porrata R, Pretz J, Price PB, Przybylski GT, Rawlins K, Razzaque S, Refflinghaus F, Resconi E, Rhode W, Ribordy M, Rizzo A, Robbins S, Roth P, Rott C, Rutledge D, Ryckbosch D, Sander HG, Sarkar S, Schlenstedt S, Schmidt T, Schneider D, Seckel D, Seo SH, Seunarine S, Silvestri A, Smith AJ, Solarz M, Song C, Sopher JE, Spiczak GM, Spiering C, Stamatikos M, Stanev T, Steffen P, Stezelberger T, Stokstad RG, Stoufer MC, Stoyanov S, Strahler EA, Straszheim T, Sulanke KH, Sullivan GW, Sumner TJ, Taboada I, Tarasova O, Tepe A, Thollander L, Tilav S, Toale PA, Turcan D, van Eijndhoven N, Vandenbroucke J, Van Overloop A, Voigt B, Wagner W, Walck C, Waldmann H, Walter M, Wang YR, Wendt C, Wiebusch CH, Wikström G, Williams DR, Wischnewski R, Wissing H, Woschnagg K, Xu XW, Yodh G, Yoshida S, Zornoza JD. Limits on the high-energy gamma and neutrino fluxes from the SGR 1806-20 giant flare of 27 December 2004 with the AMANDA-II detector. Phys Rev Lett 2006; 97:221101. [PMID: 17155787 DOI: 10.1103/physrevlett.97.221101] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2006] [Indexed: 05/12/2023]
Abstract
On 27 December 2004, a giant gamma flare from the Soft Gamma-Ray Repeater 1806-20 saturated many satellite gamma-ray detectors, being the brightest transient event ever observed in the Galaxy. AMANDA-II was used to search for down-going muons indicative of high-energy gammas and/or neutrinos from this object. The data revealed no significant signal, so upper limits (at 90% C.L.) on the normalization constant were set: 0.05(0.5) TeV-1 m;{-2} s;{-1} for gamma=-1.47 (-2) in the gamma flux and 0.4(6.1) TeV-1 m;{-2} s;{-1} for gamma=-1.47 (-2) in the high-energy neutrino flux.
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Affiliation(s)
- A Achterberg
- Department of Physics and Astronomy, Utrecht University/SRON, NL-3584 CC Utrecht, The Netherlands
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Heyne K, Mohammed OF, Usman A, Dreyer J, Nibbering ETJ, Cusanovich MA. Structural evolution of the chromophore in the primary stages of trans/cis isomerization in photoactive yellow protein. J Am Chem Soc 2006; 127:18100-6. [PMID: 16366562 PMCID: PMC2580759 DOI: 10.1021/ja051210k] [Citation(s) in RCA: 103] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We have studied the structural changes induced by optical excitation of the chromophore in wild-type photoactive yellow protein (PYP) in liquid solution with a combined approach of polarization-sensitive ultrafast infrared spectroscopy and density functional theory calculations. We identify the nuC8-C9 marker modes for solution phase PYP in the P and I0 states, from which we derive that the first intermediate state I0 that appears with a 3 ps time constant can be characterized to have a cis geometry. This is the first unequivocal demonstration that the formation of I0 correlates with the conversion from the trans to the cis state. For the P and I0 states we compare the experimentally measured vibrational band patterns and anisotropies with calculations and find that for both trans and cis configurations the planarity of the chromophore has a strong influence. The C7=C8-(C9=O)-S moiety of the chromophore in the dark P state has a trans geometry with the C=O group slightly tilted out-of-plane, in accordance with the earlier reported structure obtained in an X-ray diffraction study of PYP crystals. In the case of I0, experiment and theory are only in agreement when the C7=C8-(C9=O)-S moiety has a planar configuration. We find that the carboxylic side group of Glu46 that is hydrogen-bonded to the chromophore phenolate oxygen does not alter its orientation on going from the electronic ground P state, via the electronic excited P state to the intermediate I0 state, providing conclusive experimental evidence that the primary stages of PYP photoisomerization involve flipping of the enone thioester linkage without significant relocation of the phenolate moiety.
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Affiliation(s)
- Karsten Heyne
- : Max Born Institut für Nichtlineare Optik und Kurzzeitspektroskopie, Max Born Strasse 2A, D-12489 Berlin, Germany
| | - Omar F. Mohammed
- : Max Born Institut für Nichtlineare Optik und Kurzzeitspektroskopie, Max Born Strasse 2A, D-12489 Berlin, Germany
| | - Anwar Usman
- : Max Born Institut für Nichtlineare Optik und Kurzzeitspektroskopie, Max Born Strasse 2A, D-12489 Berlin, Germany
| | - J. Dreyer
- : Max Born Institut für Nichtlineare Optik und Kurzzeitspektroskopie, Max Born Strasse 2A, D-12489 Berlin, Germany
| | - Erik T. J. Nibbering
- : Max Born Institut für Nichtlineare Optik und Kurzzeitspektroskopie, Max Born Strasse 2A, D-12489 Berlin, Germany
| | - Michael A. Cusanovich
- :Department of Biochemistry and Molecular Biophysics, University of Arizona, Tucson, Arizona 85721, USA
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Anderson DR, Kovacs MJ, Dennie C, Kovacs G, Stiell I, Dreyer J, McCarron B, Pleasance S, Burton E, Cartier Y, Wells PS. Use of spiral computed tomography contrast angiography and ultrasonography to exclude the diagnosis of pulmonary embolism in the emergency department. J Emerg Med 2005; 29:399-404. [PMID: 16243195 DOI: 10.1016/j.jemermed.2005.05.010] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2004] [Revised: 01/19/2005] [Accepted: 05/06/2005] [Indexed: 10/25/2022]
Abstract
Spiral computed tomography (CT) contrast angiography is a promising imaging modality for the diagnosis of pulmonary embolism but the negative predictive value of this test remains controversial. We performed a multi-center prospective cohort study to determine the safety of relying on a negative spiral CT contrast angiography scan to exclude pulmonary embolism. Patients presenting to the Emergency Departments of three tertiary care institutions with clinically suspected pulmonary embolism were potentially eligible for the study. Patients underwent a clinical evaluation to categorize pretest probability into low, moderate, and high categories, and had D-dimer testing performed. Patients at low pretest probability with normal D-dimer were considered to have pulmonary embolism excluded. The remaining patients underwent spiral CT contrast angiography scan of the pulmonary arterial circulation and bilateral venous ultrasound of the proximal leg veins. Patients who were confirmed to have pulmonary embolism or deep vein thrombosis were treated with anticoagulant therapy. Patients in whom the diagnosis of pulmonary embolism was excluded did not receive anticoagulant therapy and were followed for a 3-month period for the development of venous thromboembolic complications. Eight hundred fifty-eight (858) patients were enrolled in this study. Three-hundred sixty-nine (369) patients had low pretest probability and negative D-dimer results and no further diagnostic tests were performed. None of these patients subsequently developed venous thromboembolic complications (0%, 95% confidence interval [CI] 0% to 1.0%). The remaining 489 were referred for spiral CT contrast angiography scan and ultrasound. Sixty-seven patients were confirmed to have pulmonary embolism and an additional 15 patients with negative CT scans had proximal deep vein thrombosis (DVT) on ultrasound for a total prevalence of venous thromboembolism of 82/489 (16.8%). Two of 409 patients who had pulmonary embolism excluded in the initial evaluation phase developed proximal venous thromboembolism (0.5%; 95% CI 0% to 1.8%) in the 3-month follow-up period. These findings suggest that the combination of a negative spiral CT contrast angiography scan and normal venous ultrasound imaging safely excludes the diagnosis of pulmonary embolism in the Emergency Department setting.
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Affiliation(s)
- David R Anderson
- Department of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada
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Huse N, Bruner BD, Cowan ML, Dreyer J, Nibbering ETJ, Miller RJD, Elsaesser T. Anharmonic couplings underlying the ultrafast vibrational dynamics of hydrogen bonds in liquids. Phys Rev Lett 2005; 95:147402. [PMID: 16241692 DOI: 10.1103/physrevlett.95.147402] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2004] [Indexed: 05/05/2023]
Abstract
The multilevel structure and vibrational couplings of O-H stretching transitions in intermolecular hydrogen bonds of acetic acid dimers are determined by femtosecond two-dimensional photon-echo spectroscopy in the infrared. Combining experiment and theoretical calculations, we separate Fermi resonances with combination tones of fingerprint modes from anharmonic couplings to underdamped low-frequency modes of the dimer. A multilevel density matrix approach based on density functional theory calculations reproduces the experimental results and reveals coupling strengths of both mechanisms on the order of 40-150 cm(-1).
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Affiliation(s)
- N Huse
- Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie, 12489 Berlin, Germany
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Dreyer J, Bailey-Brock JH, McCarthy SA. The immediate effects of Hurricane Iniki on intertidal fauna on the south shore of O'ahu. Mar Environ Res 2005; 59:367-380. [PMID: 15589987 DOI: 10.1016/j.marenvres.2004.04.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2003] [Revised: 02/11/2004] [Accepted: 04/08/2004] [Indexed: 05/24/2023]
Abstract
When Hurricane Iniki struck the Hawaiian Islands in September 1992, it provided a rare opportunity to examine the immediate effects of a hurricane on two intertidal benthic communities off the reefs of O'ahu, Hawai'i. The Niu Beach site contained large, obvious aggregations of the tube building polychaete Diopatra dexiognatha, and the Wailupe Beach site was without obvious tubiculous fauna at the surface. Ten replicate sediment cores were taken before and after the hurricane with a 7.6 cm PVC corer and organisms were identified to family and enumerated. There were no substantial depletions or loss of taxa after the hurricane. Oligochaetes were the most dominant taxa pre-and post-hurricane. The abundance of all dominant polychaete families increased post-hurricane. The three most abundant polychaetes were capitellids and D. dexiognatha (Onuphidae) at Niu Beach and Pygospio muscularis (Spionidae) at Wailupe Beach. We suggest that D. dexiognatha and P. muscularis help stabilize the sediments since they both form dense tube mats while capitellids and oligochaetes are considered highly adaptive surface burrowers that can take advantage of newly disturbed sediments. Overall, there was no substantial effect observed on the intertidal fauna exposed to this severe disturbance. It is suggested here that invertebrate communities in this area are adapted to survive and thrive in high-energy environments and possibly benefit from dense aggregations of tube building polychaetes.
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Affiliation(s)
- J Dreyer
- Water Resources Research Center, University of Hawai'i Manoa, 2538 The Mall, Honolulu, HI 96822, USA
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Kozich V, Werncke W, Vodchits AI, Dreyer J. Ultrafast excitation of out-of-plane vibrations and vibrational energy redistribution after internal conversion of 4-nitroaniline. J Chem Phys 2003. [DOI: 10.1063/1.1530583] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Kozich V, Werncke W, Dreyer J, Brzezinka KW, Rini M, Kummrow A, Elsaesser T. Vibrational excitation and energy redistribution after ultrafast internal conversion in 4-nitroaniline. J Chem Phys 2002. [DOI: 10.1063/1.1482698] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Stiell IG, Wells GA, Vandemheen KL, Clement CM, Lesiuk H, De Maio VJ, Laupacis A, Schull M, McKnight RD, Verbeek R, Brison R, Cass D, Dreyer J, Eisenhauer MA, Greenberg GH, MacPhail I, Morrison L, Reardon M, Worthington J. The Canadian C-spine rule for radiography in alert and stable trauma patients. JAMA 2001; 286:1841-8. [PMID: 11597285 DOI: 10.1001/jama.286.15.1841] [Citation(s) in RCA: 892] [Impact Index Per Article: 38.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
CONTEXT High levels of variation and inefficiency exist in current clinical practice regarding use of cervical spine (C-spine) radiography in alert and stable trauma patients. OBJECTIVE To derive a clinical decision rule that is highly sensitive for detecting acute C-spine injury and will allow emergency department (ED) physicians to be more selective in use of radiography in alert and stable trauma patients. DESIGN Prospective cohort study conducted from October 1996 to April 1999, in which physicians evaluated patients for 20 standardized clinical findings prior to radiography. In some cases, a second physician performed independent interobserver assessments. SETTING Ten EDs in large Canadian community and university hospitals. PATIENTS Convenience sample of 8924 adults (mean age, 37 years) who presented to the ED with blunt trauma to the head/neck, stable vital signs, and a Glasgow Coma Scale score of 15. MAIN OUTCOME MEASURE Clinically important C-spine injury, evaluated by plain radiography, computed tomography, and a structured follow-up telephone interview. The clinical decision rule was derived using the kappa coefficient, logistic regression analysis, and chi(2) recursive partitioning techniques. RESULTS Among the study sample, 151 (1.7%) had important C-spine injury. The resultant model and final Canadian C-Spine Rule comprises 3 main questions: (1) is there any high-risk factor present that mandates radiography (ie, age >/=65 years, dangerous mechanism, or paresthesias in extremities)? (2) is there any low-risk factor present that allows safe assessment of range of motion (ie, simple rear-end motor vehicle collision, sitting position in ED, ambulatory at any time since injury, delayed onset of neck pain, or absence of midline C-spine tenderness)? and (3) is the patient able to actively rotate neck 45 degrees to the left and right? By cross-validation, this rule had 100% sensitivity (95% confidence interval [CI], 98%-100%) and 42.5% specificity (95% CI, 40%-44%) for identifying 151 clinically important C-spine injuries. The potential radiography ordering rate would be 58.2%. CONCLUSION We have derived the Canadian C-Spine Rule, a highly sensitive decision rule for use of C-spine radiography in alert and stable trauma patients. If prospectively validated in other cohorts, this rule has the potential to significantly reduce practice variation and inefficiency in ED use of C-spine radiography.
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Affiliation(s)
- I G Stiell
- Clinical Epidemiology Unit, F6, Ottawa Health Research Institute, 1053 Carling Ave, Ottawa, Ontario, Canada K1Y 4E9.
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Stiell IG, Lesiuk H, Wells GA, Coyle D, McKnight RD, Brison R, Clement C, Eisenhauer MA, Greenberg GH, Macphail I, Reardon M, Worthington J, Verbeek R, Rowe B, Cass D, Dreyer J, Holroyd B, Morrison L, Schull M, Laupacis A. Canadian CT head rule study for patients with minor head injury: methodology for phase II (validation and economic analysis). Ann Emerg Med 2001; 38:317-22. [PMID: 11524653 DOI: 10.1067/mem.2001.116795] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Prospective validation on a new set of patients is an essential test of a new decision rule. However, many clinical decision rules are not prospectively assessed to determine their accuracy, reliability, clinical sensibility, or potential impact on practice. This validation process is important because many statistically derived rules or guidelines do not perform well when tested in a new population. The methodologic standards for a validation study are similar to those described in the article on phase I for derivation studies in the August 2001 issue of Annals of Emergency Medicine. The goal of phase II is to prospectively assess the accuracy, reliability, and acceptability of the decision rule in a new set of patients with minor head injury. This will determine the clinical utility of the rule and is essential if such a rule is to be widely adopted into clinical practice.
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Affiliation(s)
- I G Stiell
- Ottawa Health Research Institute, Ottawa, Ontario, Canada
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Stiell IG, Lesiuk H, Wells GA, McKnight RD, Brison R, Clement C, Eisenhauer MA, Greenberg GH, MacPhail I, Reardon M, Worthington J, Verbeek R, Rowe B, Cass D, Dreyer J, Holroyd B, Morrison L, Schull M, Laupacis A. The Canadian CT Head Rule Study for patients with minor head injury: rationale, objectives, and methodology for phase I (derivation). Ann Emerg Med 2001; 38:160-9. [PMID: 11468612 DOI: 10.1067/mem.2001.116796] [Citation(s) in RCA: 85] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Head injuries are among the most common types of trauma seen in North American emergency departments, with an estimated 1 million cases seen annually. "Minor" head injury (sometimes known as "mild") is defined by a history of loss of consciousness, amnesia, or disorientation in a patient who is conscious and talking, that is, with a Glasgow Coma Scale score of 13 to 15. Although most patients with minor head injury can be discharged without sequelae after a period of observation, in a small proportion, their neurologic condition deteriorates and requires neurosurgical intervention for intracranial hematoma. The objective of the Canadian CT Head Rule Study is to develop an accurate and reliable decision rule for the use of computed tomography (CT) in patients with minor head injury. Such a decision rule would allow physicians to be more selective in their use of CT without compromising care of patients with minor head injury. This paper describes in detail the rationale, objectives, and methodology for Phase I of the study in which the decision rule was derived. [Stiell IG, Lesiuk H, Wells GA, McKnight RD, Brison R, Clement C, Eisenhauer MA, Greenberg GH, MacPhail I, Reardon M, Worthington J, Verbeek R, Rowe B, Cass D, Dreyer J, Holroyd B, Morrison L, Schull M, Laupacis A, for the Canadian CT Head and C-Spine Study Group. The Canadian CT Head Rule Study for patients with minor head injury: rationale, objectives, and methodology for phase I (derivation). Ann Emerg Med. August 2001;38:160-169.]
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Affiliation(s)
- I G Stiell
- Ottawa Hospital Research Institute, 1053 Carling Avenue, Ottawa, Ontario, Canada K1Y 4E9
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Brenz Verca MS, Widmer DA, Wagner GC, Dreyer J. Cocaine-induced expression of the tetraspanin CD81 and its relation to hypothalamic function. Mol Cell Neurosci 2001; 17:303-16. [PMID: 11178868 DOI: 10.1006/mcne.2000.0942] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
CD81, a tetraspanin transmembrane protein involved in cell adhesion, was found by differential display to be upregulated in the nucleus accumbens of rat brain following acute cocaine treatment (four injections of 30 mg/kg every 2 h followed by 24 h withdrawal). Cocaine-induced expression of CD81 in adult rat brain was confirmed by quantitative real-time RT-PCR. Its expression in neurons and its function in the brain are unknown. In situ hybridization shows a neuron-specific expression pattern in brain regions functionally related to the regulation of cardiovascular function and fluid homeostasis. CD81 displays codistribution to galanin and, to a lesser extent, to vasopressin. These findings add to data that suggest a connection between the brain reward pathway and the centers regulating endocrine and autonomic functions, in relation to neurochemical, behavioral, and somatic consequences of drug abuse.
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Affiliation(s)
- M S Brenz Verca
- Institute of Biochemistry, University of Fribourg, Fribourg, CH-1700, Switzerland
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Dastoor Z, Dreyer J. Nuclear translocation and aggregate formation of heat shock cognate protein 70 (Hsc70) in oxidative stress and apoptosis. J Cell Sci 2000; 113 ( Pt 16):2845-54. [PMID: 10910769 DOI: 10.1242/jcs.113.16.2845] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Recent evidence has shown a role for the heat shock cognate protein Hsc70 in the response to oxidative stress. We have investigated the subcellular distribution of Hsc70 by means of laser scanning confocal microscopy in neuroblastoma NB41A3 cells, in fibroblasts R6 cells and in R6-Bcl-2, an apoptosis-resistant cell line, and its function in oxidative stress and in apoptosis has been evaluated. Endogenous Hsc70 is localised predominantly in the cytoplasm in unstressed cells, whereas oxidative stress but not apoptosis induces its translocation into the nucleus. In transfected cells overexpressing Hsc70 increased nuclear translocation and aggregation of Hsc70 in intracellular speckles is observed after oxidative stress and, to a lesser degree, after exposure to apoptotic agents. Bcl-2 did not influence the movement of Hsc70 nor the formation of Hsc70-containing speckles. Nuclear translocation of Hsc70 can be modulated by the expression of components from a previously described plasma membrane oxidoreductase involved in the cellular response against oxidative stress. Our data may suggest a correlation between differential translocation of Hsc70 with specific functions in apoptosis and a potential role in the protection against reactive oxygen species.
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Affiliation(s)
- Z Dastoor
- Institute of Biochemistry, University of Fribourg, CH-1700 Fribourg, Switzerland
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Hogiu S, Werncke W, Pfeiffer M, Dreyer J, Elsaesser T. Mode-specific vibrational excitation and energy redistribution after ultrafast intramolecular electron transfer. J Chem Phys 2000. [DOI: 10.1063/1.481946] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Lewell M, Dreyer J. A retrospective evaluation of the performance of prehospital advanced life support providers during cardiac arrest. Ann Emerg Med 1999. [DOI: 10.1016/s0196-0644(99)80228-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Chudoba C, Kummrow A, Dreyer J, Stenger J, Nibbering E, Elsaesser T, Zachariasse K. Excited state structure of 4-(dimethylamino)benzonitrile studied by femtosecond mid-infrared spectroscopy and ab initio calculations. Chem Phys Lett 1999. [DOI: 10.1016/s0009-2614(99)00711-3] [Citation(s) in RCA: 85] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Brune M, Hagley E, Dreyer J, Maître X, Maali A, Wunderlich C, Raimond JM, Haroche S. Observing the Progressive Decoherence of the "Meter" in a Quantum Measurement. Phys Rev Lett 1996; 77:4887-4890. [PMID: 10062660 DOI: 10.1103/physrevlett.77.4887] [Citation(s) in RCA: 191] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Stiell I, Hébert P, Wells G, Laupacis A, Vandemheen K, Weitzman B, Maloney J, Mahon J, Kirby A, Higginson L, Gibson J, Eisenhauer M, Dreyer J. O-53 The Ontario trial of active compression-decompression cardiopulmonary resuscitation for in hospital cardiac arrest. Resuscitation 1996. [DOI: 10.1016/0300-9572(96)83842-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Brune M, Schmidt-Kaler F, Maali A, Dreyer J, Hagley E, Raimond JM, Haroche S. Quantum Rabi oscillation: A direct test of field quantization in a cavity. Phys Rev Lett 1996; 76:1800-1803. [PMID: 10060524 DOI: 10.1103/physrevlett.76.1800] [Citation(s) in RCA: 174] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Andreani C, Menzinger F, Ricci MA, Soper AK, Dreyer J. Neutron diffraction from liquid hydrogen bromide: Study of the orientational correlations. Phys Rev B Condens Matter 1994; 49:3811-3820. [PMID: 10011273 DOI: 10.1103/physrevb.49.3811] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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