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Arnquist IJ, Avignone FT, Barabash AS, Barton CJ, Bhimani KH, Blalock E, Bos B, Busch M, Buuck M, Caldwell TS, Chan YD, Christofferson CD, Chu PH, Clark ML, Cuesta C, Detwiler JA, Efremenko Y, Ejiri H, Elliott SR, Giovanetti GK, Green MP, Gruszko J, Guinn IS, Guiseppe VE, Haufe CR, Henning R, Hervas Aguilar D, Hoppe EW, Hostiuc A, Kidd MF, Kim I, Kouzes RT, Lannen V TE, Li A, Lopez AM, López-Castaño JM, Martin EL, Martin RD, Massarczyk R, Meijer SJ, Mertens S, Oli TK, Othman G, Paudel LS, Pettus W, Poon AWP, Radford DC, Rager J, Reine AL, Rielage K, Ruof NW, Schaper DC, Tedeschi D, Varner RL, Vasilyev S, Wilkerson JF, Wiseman C, Xu W, Yu CH, Zhu BX. Exotic Dark Matter Search with the Majorana Demonstrator. Phys Rev Lett 2024; 132:041001. [PMID: 38335333 DOI: 10.1103/physrevlett.132.041001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 09/08/2023] [Accepted: 11/09/2023] [Indexed: 02/12/2024]
Abstract
With excellent energy resolution and ultralow-level radiogenic backgrounds, the high-purity germanium detectors in the Majorana Demonstrator enable searches for several classes of exotic dark matter (DM) models. In this work, we report new experimental limits on keV-scale sterile neutrino DM via the transition magnetic moment from conversion to active neutrinos ν_{s}→ν_{a}. We report new limits on fermionic dark matter absorption (χ+A→ν+A) and sub-GeV DM-nucleus 3→2 scattering (χ+χ+A→ϕ+A), and new exclusion limits for bosonic dark matter (axionlike particles and dark photons). These searches utilize the (1-100)-keV low-energy region of a 37.5-kg y exposure collected by the Demonstrator between May 2016 and November 2019 using a set of ^{76}Ge-enriched detectors whose surface exposure time was carefully controlled, resulting in extremely low levels of cosmogenic activation.
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Affiliation(s)
- I J Arnquist
- Pacific Northwest National Laboratory, Richland, Washington 99354, USA
| | - F T Avignone
- Department of Physics and Astronomy, University of South Carolina, Columbia, South Carolina 29208, USA
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - A S Barabash
- National Research Center "Kurchatov Institute" Institute for Theoretical and Experimental Physics, Moscow 117218, Russia
| | - C J Barton
- Department of Physics, University of South Dakota, Vermillion, South Dakota 57069, USA
| | - K H Bhimani
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - E Blalock
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA
| | - B Bos
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - M Busch
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics, Duke University, Durham, North Carolina 27708, USA
| | - M Buuck
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - T S Caldwell
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
| | - Y-D Chan
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | | | - P-H Chu
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - M L Clark
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - C Cuesta
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, CIEMAT 28040, Madrid, Spain
| | - J A Detwiler
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - Yu Efremenko
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37916, USA
| | - H Ejiri
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - S R Elliott
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - G K Giovanetti
- Physics Department, Williams College, Williamstown, Massachusetts 01267, USA
| | - M P Green
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA
| | - J Gruszko
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - I S Guinn
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - V E Guiseppe
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - C R Haufe
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - R Henning
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - D Hervas Aguilar
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - E W Hoppe
- Pacific Northwest National Laboratory, Richland, Washington 99354, USA
| | - A Hostiuc
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - M F Kidd
- Tennessee Tech University, Cookeville, Tennessee 38505, USA
| | - I Kim
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - R T Kouzes
- Pacific Northwest National Laboratory, Richland, Washington 99354, USA
| | - T E Lannen V
- Department of Physics and Astronomy, University of South Carolina, Columbia, South Carolina 29208, USA
| | - A Li
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - A M Lopez
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37916, USA
| | | | - E L Martin
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - R D Martin
- Department of Physics, Engineering Physics and Astronomy, Queen's University, Kingston, Ontario K7L 3N6, Canada
| | - R Massarczyk
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - S J Meijer
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - S Mertens
- Max-Planck-Institut für Physik, München 80805, Germany
- Physik Department and Excellence Cluster Universe, Technische Universität, München 85748, Germany
| | - T K Oli
- Department of Physics, University of South Dakota, Vermillion, South Dakota 57069, USA
| | - G Othman
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - L S Paudel
- Department of Physics, University of South Dakota, Vermillion, South Dakota 57069, USA
| | - W Pettus
- IU Center for Exploration of Energy and Matter, and Department of Physics, Indiana University, Bloomington, Indiana 47405, USA
| | - A W P Poon
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - D C Radford
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - J Rager
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
| | - A L Reine
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - K Rielage
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - N W Ruof
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - D C Schaper
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - D Tedeschi
- Department of Physics and Astronomy, University of South Carolina, Columbia, South Carolina 29208, USA
| | - R L Varner
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - S Vasilyev
- Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - J F Wilkerson
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - C Wiseman
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - W Xu
- Department of Physics, University of South Dakota, Vermillion, South Dakota 57069, USA
| | - C-H Yu
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - B X Zhu
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
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Torcal-Milla FJ, Lobera J, Roche EM, Lopez AM, Palero V, Andres N, Arroyo MP. Modified Mach-Zehnder interferometer for spatial coherence measurement. Opt Lett 2023; 48:3127-3130. [PMID: 37319043 DOI: 10.1364/ol.491481] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 05/15/2023] [Indexed: 06/17/2023]
Abstract
Spatial coherence of light sources is usually obtained by using the classical Young's interferometer. Although the original experiment was improved upon in successive works, some drawbacks still remain. For example, several pairs of points must be used to obtain the complex coherence degree (normalized first-order correlation function) of the source. In this work, a modified Mach-Zehnder interferometer which includes a pair of lenses and is able to measure the spatial coherence degree is presented. With this modified Mach-Zehnder interferometer, it is possible to measure the full 4D spatial coherence function by displacing the incoming beam laterally. To test it, we have measured only a 2D projection (zero shear) of the 4D spatial coherence, which is enough to characterize some types of sources. The setup has no movable parts, making it robust and portable. To test it, the two-dimensional spatial coherence of a high-speed laser with two cavities was measured for different pulse energy values. We observe from the experimental measurements that the complex degree of coherence changes with the selected output energy. Both laser cavities seem to have similar complex coherence degrees for the maximum energy, although it is not symmetrical. Thus, this analysis will allow us to determine the best configuration of the double-cavity laser for interferometric applications. Furthermore, the proposed approach can be applied to any other light sources.
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Arnquist IJ, Avignone FT, Barabash AS, Barton CJ, Bhimani KH, Blalock E, Bos B, Busch M, Buuck M, Caldwell TS, Chan YD, Christofferson CD, Chu PH, Clark ML, Cuesta C, Detwiler JA, Efremenko Y, Ejiri H, Elliott SR, Giovanetti GK, Green MP, Gruszko J, Guinn IS, Guiseppe VE, Haufe CR, Henning R, Hervas Aguilar D, Hoppe EW, Hostiuc A, Kim I, Kouzes RT, Lannen V TE, Li A, Lopez AM, López-Castaño JM, Martin EL, Martin RD, Massarczyk R, Meijer SJ, Oli TK, Othman G, Paudel LS, Pettus W, Poon AWP, Radford DC, Reine AL, Rielage K, Ruof NW, Tedeschi D, Varner RL, Vasilyev S, Wilkerson JF, Wiseman C, Xu W, Yu CH, Zhu BX. Erratum: Search for Spontaneous Radiation from Wave Function Collapse in the Majorana Demonstrator [Phys. Rev. Lett. 129, 080401 (2022)]. Phys Rev Lett 2023; 130:239902. [PMID: 37354428 DOI: 10.1103/physrevlett.130.239902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Indexed: 06/26/2023]
Abstract
This corrects the article DOI: 10.1103/PhysRevLett.129.080401.
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4
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Arnquist IJ, Avignone FT, Barabash AS, Barton CJ, Barton PJ, Bhimani KH, Blalock E, Bos B, Busch M, Buuck M, Caldwell TS, Chan YD, Christofferson CD, Chu PH, Clark ML, Cuesta C, Detwiler JA, Efremenko Y, Ejiri H, Elliott SR, Giovanetti GK, Green MP, Gruszko J, Guinn IS, Guiseppe VE, Haufe CR, Henning R, Hervas Aguilar D, Hoppe EW, Hostiuc A, Kidd MF, Kim I, Kouzes RT, Lannen V TE, Li A, Lopez AM, López-Castaño JM, Martin EL, Martin RD, Massarczyk R, Meijer SJ, Mertens S, Oli TK, Othman G, Paudel LS, Pettus W, Poon AWP, Radford DC, Reine AL, Rielage K, Ruof NW, Schaper DC, Tedeschi D, Varner RL, Vasilyev S, Wilkerson JF, Wiseman C, Xu W, Yu CH, Zhu BX. Final Result of the Majorana Demonstrator's Search for Neutrinoless Double-β Decay in ^{76}Ge. Phys Rev Lett 2023; 130:062501. [PMID: 36827565 DOI: 10.1103/physrevlett.130.062501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 11/09/2022] [Accepted: 12/16/2022] [Indexed: 06/18/2023]
Abstract
The Majorana Demonstrator searched for neutrinoless double-β decay (0νββ) of ^{76}Ge using modular arrays of high-purity Ge detectors operated in vacuum cryostats in a low-background shield. The arrays operated with up to 40.4 kg of detectors (27.2 kg enriched to ∼88% in ^{76}Ge). From these measurements, the Demonstrator has accumulated 64.5 kg yr of enriched active exposure. With a world-leading energy resolution of 2.52 keV FWHM at the 2039 keV Q_{ββ} (0.12%), we set a half-life limit of 0νββ in ^{76}Ge at T_{1/2}>8.3×10^{25} yr (90% C.L.). This provides a range of upper limits on m_{ββ} of (113-269) meV (90% C.L.), depending on the choice of nuclear matrix elements.
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Affiliation(s)
- I J Arnquist
- Pacific Northwest National Laboratory, Richland, Washington 99354, USA
| | - F T Avignone
- Department of Physics and Astronomy, University of South Carolina, Columbia, South Carolina 29208, USA
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - A S Barabash
- National Research Center "Kurchatov Institute" Institute for Theoretical and Experimental Physics, Moscow, 117218 Russia
| | - C J Barton
- Department of Physics, University of South Dakota, Vermillion, South Dakota 57069, USA
| | - P J Barton
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - K H Bhimani
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - E Blalock
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA
| | - B Bos
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - M Busch
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics, Duke University, Durham, North Carolina 27708, USA
| | - M Buuck
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - T S Caldwell
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - Y-D Chan
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | | | - P-H Chu
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - M L Clark
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - C Cuesta
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, CIEMAT, 28040 Madrid, Spain
| | - J A Detwiler
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - Yu Efremenko
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37916, USA
| | - H Ejiri
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - S R Elliott
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - G K Giovanetti
- Physics Department, Williams College, Williamstown, Massachusetts 01267, USA
| | - M P Green
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA
| | - J Gruszko
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - I S Guinn
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - V E Guiseppe
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - C R Haufe
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - R Henning
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - D Hervas Aguilar
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - E W Hoppe
- Pacific Northwest National Laboratory, Richland, Washington 99354, USA
| | - A Hostiuc
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - M F Kidd
- Tennessee Tech University, Cookeville, Tennessee 38505, USA
| | - I Kim
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - R T Kouzes
- Pacific Northwest National Laboratory, Richland, Washington 99354, USA
| | - T E Lannen V
- Department of Physics and Astronomy, University of South Carolina, Columbia, South Carolina 29208, USA
| | - A Li
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - A M Lopez
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37916, USA
| | | | - E L Martin
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - R D Martin
- Department of Physics, Engineering Physics and Astronomy, Queen's University, Kingston, Ontario K7L 3N6, Canada
| | - R Massarczyk
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - S J Meijer
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - S Mertens
- Max-Planck-Institut für Physik, München 80805, Germany
- Physik Department and Excellence Cluster Universe, Technische Universität, München, 85748 Germany
| | - T K Oli
- Department of Physics, University of South Dakota, Vermillion, South Dakota 57069, USA
| | - G Othman
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - L S Paudel
- Department of Physics, University of South Dakota, Vermillion, South Dakota 57069, USA
| | - W Pettus
- Department of Physics, Indiana University, Bloomington, Indiana 47405, USA
- IU Center for Exploration of Energy and Matter, Bloomington, Indiana 47408, USA
| | - A W P Poon
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - D C Radford
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - A L Reine
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - K Rielage
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - N W Ruof
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - D C Schaper
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - D Tedeschi
- Department of Physics and Astronomy, University of South Carolina, Columbia, South Carolina 29208, USA
| | - R L Varner
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - S Vasilyev
- Joint Institute for Nuclear Research, Dubna, 141980 Russia
| | - J F Wilkerson
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - C Wiseman
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - W Xu
- Department of Physics, University of South Dakota, Vermillion, South Dakota 57069, USA
| | - C-H Yu
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - B X Zhu
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
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5
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Arnquist IJ, Avignone FT, Barabash AS, Barton CJ, Bhimani KH, Blalock E, Bos B, Busch M, Buuck M, Caldwell TS, Chan YD, Christofferson CD, Chu PH, Clark ML, Cuesta C, Detwiler JA, Efremenko Y, Ejiri H, Elliott SR, Giovanetti GK, Green MP, Gruszko J, Guinn IS, Guiseppe VE, Haufe CR, Henning R, Hervas Aguilar D, Hoppe EW, Hostiuc A, Kim I, Kouzes RT, Lannen V TE, Li A, Lopez AM, López-Castaño JM, Martin EL, Martin RD, Massarczyk R, Meijer SJ, Oli TK, Othman G, Paudel LS, Pettus W, Poon AWP, Radford DC, Reine AL, Rielage K, Ruof NW, Tedeschi D, Varner RL, Vasilyev S, Wilkerson JF, Wiseman C, Xu W, Yu CH, Zhu BX. Search for Spontaneous Radiation from Wave Function Collapse in the Majorana Demonstrator. Phys Rev Lett 2022; 129:080401. [PMID: 36053678 DOI: 10.1103/physrevlett.129.080401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 06/14/2022] [Accepted: 07/15/2022] [Indexed: 06/15/2023]
Abstract
The Majorana Demonstrator neutrinoless double-beta decay experiment comprises a 44 kg (30 kg enriched in ^{76}Ge) array of p-type, point-contact germanium detectors. With its unprecedented energy resolution and ultralow backgrounds, Majorana also searches for rare event signatures from beyond standard model physics in the low energy region below 100 keV. In this Letter, we test the continuous spontaneous localization (CSL) model, one of the mathematically well-motivated wave function collapse models aimed at solving the long-standing unresolved quantum mechanical measurement problem. While the CSL predicts the existence of a detectable radiation signature in the x-ray domain, we find no evidence of such radiation in the 19-100 keV range in a 37.5 kg-y enriched germanium exposure collected between December 31, 2015, and November 27, 2019, with the Demonstrator. We explored both the non-mass-proportional (n-m-p) and the mass-proportional (m-p) versions of the CSL with two different assumptions: that only the quasifree electrons can emit the x-ray radiation and that the nucleus can coherently emit an amplified radiation. In all cases, we set the most stringent upper limit to date for the white CSL model on the collapse rate, λ, providing a factor of 40-100 improvement in sensitivity over comparable searches. Our limit is the most stringent for large parts of the allowed parameter space. If the result is interpreted in terms of the Diòsi-Penrose gravitational wave function collapse model, the lower bound with a 95% confidence level is almost an order of magnitude improvement over the previous best limit.
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Affiliation(s)
- I J Arnquist
- Pacific Northwest National Laboratory, Richland, Washington 99354, USA
| | - F T Avignone
- Department of Physics and Astronomy, University of South Carolina, Columbia, South Carolina 29208, USA
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - A S Barabash
- National Research Center "Kurchatov Institute" Institute for Theoretical and Experimental Physics, Moscow, 117218 Russia
| | - C J Barton
- Department of Physics, University of South Dakota, Vermillion, South Dakota 57069, USA
| | - K H Bhimani
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - E Blalock
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA
| | - B Bos
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - M Busch
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics, Duke University, Durham, North Carolina 27708, USA
| | - M Buuck
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - T S Caldwell
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - Y-D Chan
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | | | - P-H Chu
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - M L Clark
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - C Cuesta
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, CIEMAT 28040 Madrid, Spain
| | - J A Detwiler
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - Yu Efremenko
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37916, USA
| | - H Ejiri
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - S R Elliott
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - G K Giovanetti
- Physics Department, Williams College, Williamstown, Massachusetts 01267, USA
| | - M P Green
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA
| | - J Gruszko
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - I S Guinn
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - V E Guiseppe
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - C R Haufe
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - R Henning
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - D Hervas Aguilar
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - E W Hoppe
- Pacific Northwest National Laboratory, Richland, Washington 99354, USA
| | - A Hostiuc
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - I Kim
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - R T Kouzes
- Pacific Northwest National Laboratory, Richland, Washington 99354, USA
| | - T E Lannen V
- Department of Physics and Astronomy, University of South Carolina, Columbia, South Carolina 29208, USA
| | - A Li
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - A M Lopez
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37916, USA
| | | | - E L Martin
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - R D Martin
- Department of Physics, Engineering Physics and Astronomy, Queen's University, Kingston, Ontario K7L 3N6, Canada
| | - R Massarczyk
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - S J Meijer
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - T K Oli
- Department of Physics, University of South Dakota, Vermillion, South Dakota 57069, USA
| | - G Othman
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - L S Paudel
- Department of Physics, University of South Dakota, Vermillion, South Dakota 57069, USA
| | - W Pettus
- Department of Physics, Indiana University, Bloomington, Indiana 47405, USA
- IU Center for Exploration of Energy and Matter, Bloomington, Indiana 47408, USA
| | - A W P Poon
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - D C Radford
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - A L Reine
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - K Rielage
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - N W Ruof
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - D Tedeschi
- Department of Physics and Astronomy, University of South Carolina, Columbia, South Carolina 29208, USA
| | - R L Varner
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - S Vasilyev
- Joint Institute for Nuclear Research, Dubna, 141980 Russia
| | - J F Wilkerson
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - C Wiseman
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - W Xu
- Department of Physics, University of South Dakota, Vermillion, South Dakota 57069, USA
| | - C-H Yu
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - B X Zhu
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
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6
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Arnquist IJ, Avignone FT, Barabash AS, Barton CJ, Bhimani KH, Blalock E, Bos B, Busch M, Buuck M, Caldwell TS, Chan YD, Christofferson CD, Chu PH, Clark ML, Cuesta C, Detwiler JA, Efremenko Y, Ejiri H, Elliott SR, Giovanetti GK, Green MP, Gruszko J, Guinn IS, Guiseppe VE, Haufe CR, Henning R, Hervas Aguilar D, Hoppe EW, Hostiuc A, Kidd MF, Kim I, Kouzes RT, Lannen V TE, Li A, Lopez AM, López-Castaño JM, Martin EL, Martin RD, Massarczyk R, Meijer SJ, Oli TK, Othman G, Paudel LS, Pettus W, Poon AWP, Radford DC, Reine AL, Rielage K, Ruof NW, Schaper DC, Tedeschi D, Varner RL, Vasilyev S, Wilkerson JF, Wiseman C, Xu W, Yu CH, Zhu BX. Search for Solar Axions via Axion-Photon Coupling with the Majorana Demonstrator. Phys Rev Lett 2022; 129:081803. [PMID: 36053699 DOI: 10.1103/physrevlett.129.081803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 07/21/2022] [Indexed: 06/15/2023]
Abstract
Axions were originally proposed to explain the strong-CP problem in QCD. Through axion-photon coupling, the Sun could be a major source of axions, which could be measured in solid state detection experiments with enhancements due to coherent Primakoff-Bragg scattering. The Majorana Demonstrator experiment has searched for solar axions with a set of ^{76}Ge-enriched high purity germanium detectors using a 33 kg-yr exposure collected between January, 2017 and November, 2019. A temporal-energy analysis gives a new limit on the axion-photon coupling as g_{aγ}<1.45×10^{-9} GeV^{-1} (95% confidence level) for axions with mass up to 100 eV/c^{2}. This improves laboratory-based limits between about 1 eV/c^{2} and 100 eV/c^{2}.
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Affiliation(s)
- I J Arnquist
- Pacific Northwest National Laboratory, Richland, Washington 99354, USA
| | - F T Avignone
- Department of Physics and Astronomy, University of South Carolina, Columbia, South Carolina 29208, USA
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - A S Barabash
- National Research Center "Kurchatov Institute" Institute for Theoretical and Experimental Physics, Moscow, 117218 Russia
| | - C J Barton
- Department of Physics, University of South Dakota, Vermillion, South Dakota 57069, USA
| | - K H Bhimani
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - E Blalock
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA
| | - B Bos
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - M Busch
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics, Duke University, Durham, North Carolina 27708, USA
| | - M Buuck
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - T S Caldwell
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - Y-D Chan
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | | | - P-H Chu
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - M L Clark
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - C Cuesta
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, CIEMAT 28040, Madrid, Spain
| | - J A Detwiler
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - Yu Efremenko
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37916, USA
| | - H Ejiri
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - S R Elliott
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - G K Giovanetti
- Physics Department, Williams College, Williamstown, Massachusetts 01267, USA
| | - M P Green
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA
| | - J Gruszko
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - I S Guinn
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - V E Guiseppe
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - C R Haufe
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - R Henning
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - D Hervas Aguilar
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - E W Hoppe
- Pacific Northwest National Laboratory, Richland, Washington 99354, USA
| | - A Hostiuc
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - M F Kidd
- Tennessee Tech University, Cookeville, Tennessee 38505, USA
| | - I Kim
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - R T Kouzes
- Pacific Northwest National Laboratory, Richland, Washington 99354, USA
| | - T E Lannen V
- Department of Physics and Astronomy, University of South Carolina, Columbia, South Carolina 29208, USA
| | - A Li
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - A M Lopez
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37916, USA
| | | | - E L Martin
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - R D Martin
- Department of Physics, Engineering Physics and Astronomy, Queen's University, Kingston, Ontario K7L 3N6, Canada
| | - R Massarczyk
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - S J Meijer
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - T K Oli
- Department of Physics, University of South Dakota, Vermillion, South Dakota 57069, USA
| | - G Othman
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - L S Paudel
- Department of Physics, University of South Dakota, Vermillion, South Dakota 57069, USA
| | - W Pettus
- Department of Physics, Indiana University, Bloomington, Indiana 47405, USA
- IU Center for Exploration of Energy and Matter, Bloomington, Indiana 47408, USA
| | - A W P Poon
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - D C Radford
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - A L Reine
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - K Rielage
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - N W Ruof
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - D C Schaper
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - D Tedeschi
- Department of Physics and Astronomy, University of South Carolina, Columbia, South Carolina 29208, USA
| | - R L Varner
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - S Vasilyev
- Joint Institute for Nuclear Research, Dubna, 141980 Russia
| | - J F Wilkerson
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - C Wiseman
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - W Xu
- Department of Physics, University of South Dakota, Vermillion, South Dakota 57069, USA
| | - C-H Yu
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - B X Zhu
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
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7
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Bollatti JM, Zenobi MG, Artusso NA, Alfaro GF, Lopez AM, Barton BA, Nelson CD, Staples CR, Santos JEP. Timing of initiation and duration of feeding rumen-protected choline affects performance of lactating Holstein cows. J Dairy Sci 2020; 103:4174-4191. [PMID: 32171515 DOI: 10.3168/jds.2019-17293] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Accepted: 01/17/2020] [Indexed: 12/20/2022]
Abstract
Objectives were to evaluate the effects of altering timing of initiating and duration of supplementing rumen-protected choline (RPC) on lactation performance in dairy cows. The hypothesis was that RPC increases yields of milk and milk components, regardless of when supplementation is initiated, and that the effects of supplementing RPC starting prepartum and continuing post-transition would be additive. Cows at 241 ± 2.2 d of gestation were blocked by parity group (49 entering lactation 2, 50 entering lactation >2) and 305-d milk yield and, within block, assigned randomly to 1 of 4 treatments arranged as a 2 × 2 factorial with 2 levels of choline in transition, from 21 d pre- to 21 d postpartum, and 2 levels of choline in post-transition, from 22 to 105 d postpartum. The 2 levels of RPC supplemented were either 0 g/d or 12.9 g/d of choline ion fed as 60 g/d of an RPC product that was top-dressed onto the total mixed ration. Thus, treatments were as follows: NN (n = 25): no choline in transition or post-transition; NC (n = 25): no choline in transition and choline in post-transition; CN (n = 25): choline in transition and no choline in post-transition; CC (n = 24): choline in transition and in post-transition. Prepartum, treatments were supplemented (mean ± SD) for the last 18.8 ± 5.7 and 19.2 ± 5.0 d of gestation in treatments with 0 or 12.9 g/d of choline ion, respectively. Supplementing RPC prepartum did not affect dry matter intake (DMI), body weight (BW), or body condition score (BCS) in the last 3 weeks of gestation. Likewise, RPC did not affect the yield or the composition of colostrum. Supplementation with RPC during transition increased fat percent by 0.02 percentage units, fat yield by 0.16 kg/d, and energy-corrected milk (ECM) by 3.1 kg/d in the first 21 d postpartum, and increased fat yield by 0.10 kg/d and ECM by 2.4 kg/d from 22 to 105 d postpartum. Supplementing RPC during transition did not affect DMI postpartum, but it improved feed efficiency, and cows produced 0.11 kg/d more ECM per kg of DMI. Changes in BW and BCS during the first 21 d postpartum did not differ between treatments. Cows fed RPC during transition had more negative net energy balance and 0.1 unit smaller BCS in the first 105 d postpartum than non-supplemented cows. Supplementing RPC in post-transition did not influence productive performance in dairy cows, and choline supplementation during transition or post-transition did not affect measures of reproduction. Collectively, supplementing RPC to supply 12.9 g/d of choline ion benefited productive performance in dairy cows when supplementation occurred during the transition period, but no additional benefit was observed from supplementing RPC past 22 d postpartum.
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Affiliation(s)
- J M Bollatti
- Department of Animal Sciences, University of Florida, Gainesville 32611
| | - M G Zenobi
- Department of Animal Sciences, University of Florida, Gainesville 32611
| | - N A Artusso
- Department of Animal Sciences, University of Florida, Gainesville 32611
| | - G F Alfaro
- Department of Animal Sciences, University of Florida, Gainesville 32611
| | - A M Lopez
- Department of Animal Sciences, University of Florida, Gainesville 32611
| | | | - C D Nelson
- Department of Animal Sciences, University of Florida, Gainesville 32611
| | - C R Staples
- Department of Animal Sciences, University of Florida, Gainesville 32611
| | - J E P Santos
- Department of Animal Sciences, University of Florida, Gainesville 32611.
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8
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Segrin C, Badger TA, Sikorskii A, Pasvogel A, Weihs K, Lopez AM, Chalasani P. Longitudinal Dyadic Interdependence in Psychological Distress Among Latinas With Breast Cancer and Their Informal Caregivers. Cancer Epidemiol Biomarkers Prev 2020. [DOI: 10.1158/1055-9965.epi-20-0052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Abstract
Cancer diagnosis and treatment can generate substantial distress for both survivors and their informal caregivers, defined as family members or friends who provide care and assistance to the cancer survivor. The primary aim of this investigation is to test a model of dyadic interdependence in distress experienced by Latina breast cancer survivors and their informal caregivers to determine if each influences the other. Methods: To test this prediction, 209 Latinas with breast cancer and their informal caregivers (dyads) were followed for 4 waves of assessment over the course of 6 months. Both psychological (depression, anxiety, perceived stress) and physical (number of symptoms, symptom distress) indicators of distress were assessed. Longitudinal analyses of dyadic data were performed in accordance with the actor-partner interdependence model using linear mixed effects modeling. Results: Findings indicated that psychological distress was interdependent between cancer survivors and their informal caregivers over the 6 months of observation. Caregivers experienced greater depression, anxiety, and stress to the extent that the survivors reported such distress, and vice versa. These effects held, even when controlling for nature of the survivor-caregiver relationship (married to each other or not), education, and the dyads' baseline similarity on distress. However, there was no such evidence of interdependence on indicators of physical distress. Conclusions: These findings are consistent with emotional contagion processes by which psychological distress is transmitted over time between cancer survivors and their informal caregivers. Latina cancer survivors are a particularly vulnerable population due to health disparities, linguistic barriers, and socioeconomic challenges. Management of psychological distress is of particular concern in this population. These findings point to the potential importance of caregiver well-being for the welfare of Latina breast cancer survivors.
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9
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Bollatti JM, Zenobi MG, Artusso NA, Lopez AM, Nelson CD, Barton BA, Staples CR, Santos JEP. Effects of rumen-protected choline on the inflammatory and metabolic status and health of dairy cows during the transition period. J Dairy Sci 2019; 103:4192-4205. [PMID: 31785869 DOI: 10.3168/jds.2019-17294] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Accepted: 09/23/2019] [Indexed: 12/18/2022]
Abstract
The objectives of this study were to evaluate the effects of rumen-protected choline (RPC) supplementation from 21 d pre- to 21 d postpartum on markers of metabolic status and inflammatory response, concentrations of liposoluble vitamins, and plasma total Ca in parous Holstein cows. The hypotheses were that supplementing RPC during the transition period would reduce hepatic triacylglycerol accumulation postpartum and attenuate markers of inflammatory response following parturition, and collectively, such responses were expected to benefit health of dairy cows. Parous cows at 241 d of gestation were blocked by parity group and 305-d milk yield, and within block, they were assigned randomly to receive either 0 g/d [no choline in transition (NT), n = 55] or 12.9 g/d choline ion [choline in transition (CT), n = 58] from 21 d pre- to 21 postpartum. The RPC product was individually top-dressed onto the total mixed ration once daily. Prepartum, treatments were supplemented (mean ± standard deviation) for the last 18.8 ± 5.7 and 19.2 ± 5.0 d of gestation in NT and CT, respectively. Supplementing RPC prepartum did not affect concentrations of plasma metabolites and inflammatory markers during the last 3 wk of gestation. Postpartum, cows fed RPC had greater hepatic concentration of hepatic triacylglycerol (NT = 3.4 vs. CT = 4.4%) and tended to have increased concentration of β-hydroxybutyrate (NT = 0.48 vs. CT = 0.53 mM) in plasma. In spite of the increased hepatic triacylglycerol in cows fed RPC, treatment did not affect the concentrations of the inflammatory marker tumor necrosis factor-α or of the positive acute phase proteins, haptoglobin and fibrinogen. Supplementing choline tended to increase the concentration of plasma triacylglycerol by 0.69 mg/dL in the first 21 d postpartum and reduced the incidence of subclinical hypocalcemia by 20.9 percentage units compared with NT. Supplementing transition cows with RPC did not affect the concentrations of liposoluble vitamins in the first 7 d postpartum or the incidence of individual diseases or morbidity in early lactation. The inability of supplemental choline to reduce hepatic triacylglycerol might have been a consequence of the increased productive performance without additional dry matter intake.
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Affiliation(s)
- J M Bollatti
- Department of Animal Sciences, University of Florida, Gainesville 32611
| | - M G Zenobi
- Department of Animal Sciences, University of Florida, Gainesville 32611
| | - N A Artusso
- Department of Animal Sciences, University of Florida, Gainesville 32611
| | - A M Lopez
- Department of Animal Sciences, University of Florida, Gainesville 32611
| | - C D Nelson
- Department of Animal Sciences, University of Florida, Gainesville 32611
| | | | - C R Staples
- Department of Animal Sciences, University of Florida, Gainesville 32611
| | - J E P Santos
- Department of Animal Sciences, University of Florida, Gainesville 32611.
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10
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Alvis SI, Arnquist IJ, Avignone FT, Barabash AS, Barton CJ, Bertrand FE, Brudanin V, Busch M, Buuck M, Caldwell TS, Chan YD, Christofferson CD, Chu PH, Cuesta C, Detwiler JA, Dunagan C, Efremenko Y, Ejiri H, Elliott SR, Gilliss T, Giovanetti GK, Green MP, Gruszko J, Guinn IS, Guiseppe VE, Haufe CR, Hehn L, Henning R, Hoppe EW, Howe MA, Konovalov SI, Kouzes RT, Lopez AM, Martin RD, Massarczyk R, Meijer SJ, Mertens S, Myslik J, O'Shaughnessy C, Othman G, Pettus W, Poon AWP, Radford DC, Rager J, Reine AL, Rielage K, Robertson RGH, Ruof NW, Shanks B, Shirchenko M, Suriano AM, Tedeschi D, Varner RL, Vasilyev S, Vorren K, White BR, Wilkerson JF, Wiseman C, Xu W, Yakushev E, Yu CH, Yumatov V, Zhitnikov I, Zhu BX. First Limit on the Direct Detection of Lightly Ionizing Particles for Electric Charge as Low as e/1000 with the Majorana Demonstrator. Phys Rev Lett 2018; 120:211804. [PMID: 29883176 DOI: 10.1103/physrevlett.120.211804] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 04/23/2018] [Indexed: 06/08/2023]
Abstract
The Majorana Demonstrator is an ultralow-background experiment searching for neutrinoless double-beta decay in ^{76}Ge. The heavily shielded array of germanium detectors, placed nearly a mile underground at the Sanford Underground Research Facility in Lead, South Dakota, also allows searches for new exotic physics. Free, relativistic, lightly ionizing particles with an electrical charge less than e are forbidden by the standard model but predicted by some of its extensions. If such particles exist, they might be detected in the Majorana Demonstrator by searching for multiple-detector events with individual-detector energy depositions down to 1 keV. This search is background-free, and no candidate events have been found in 285 days of data taking. New direct-detection limits are set for the flux of lightly ionizing particles for charges as low as e/1000.
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Affiliation(s)
- S I Alvis
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - I J Arnquist
- Pacific Northwest National Laboratory, Richland, Washington 99354, USA
| | - F T Avignone
- Department of Physics and Astronomy, University of South Carolina, Columbia, South Carolina 29208, USA
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - A S Barabash
- National Research Center "Kurchatov Institute" Institute for Theoretical and Experimental Physics, Moscow 117218, Russia
| | - C J Barton
- Department of Physics, University of South Dakota, Vermillion, South Dakota 57069, USA
| | - F E Bertrand
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - V Brudanin
- Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - M Busch
- Department of Physics, Duke University, Durham, North Carolina 27708, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - M Buuck
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - T S Caldwell
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
| | - Y-D Chan
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - C D Christofferson
- South Dakota School of Mines and Technology, Rapid City, South Dakota 57701, USA
| | - P-H Chu
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - C Cuesta
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - J A Detwiler
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - C Dunagan
- South Dakota School of Mines and Technology, Rapid City, South Dakota 57701, USA
| | - Yu Efremenko
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37916, USA
| | - H Ejiri
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - S R Elliott
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - T Gilliss
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
| | - G K Giovanetti
- Department of Physics, Princeton University, Princeton, New Jersey 08544, USA
| | - M P Green
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA
| | - J Gruszko
- Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - I S Guinn
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - V E Guiseppe
- Department of Physics and Astronomy, University of South Carolina, Columbia, South Carolina 29208, USA
| | - C R Haufe
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
| | - L Hehn
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - R Henning
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
| | - E W Hoppe
- Pacific Northwest National Laboratory, Richland, Washington 99354, USA
| | - M A Howe
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
| | - S I Konovalov
- National Research Center "Kurchatov Institute" Institute for Theoretical and Experimental Physics, Moscow 117218, Russia
| | - R T Kouzes
- Pacific Northwest National Laboratory, Richland, Washington 99354, USA
| | - A M Lopez
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37916, USA
| | - R D Martin
- Department of Physics, Engineering Physics and Astronomy, Queen's University, Kingston, Ontario K7L 3N6, Canada
| | - R Massarczyk
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - S J Meijer
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
| | - S Mertens
- Max-Planck-Institut für Physik, München 80805, Germany
- Physik Department, Technische Universität, München 85748, Germany
| | - J Myslik
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - C O'Shaughnessy
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
| | - G Othman
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
| | - W Pettus
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - A W P Poon
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - D C Radford
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - J Rager
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
| | - A L Reine
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
| | - K Rielage
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - R G H Robertson
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - N W Ruof
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - B Shanks
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - M Shirchenko
- Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - A M Suriano
- South Dakota School of Mines and Technology, Rapid City, South Dakota 57701, USA
| | - D Tedeschi
- Department of Physics and Astronomy, University of South Carolina, Columbia, South Carolina 29208, USA
| | - R L Varner
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - S Vasilyev
- Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - K Vorren
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
| | - B R White
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - J F Wilkerson
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
| | - C Wiseman
- Department of Physics and Astronomy, University of South Carolina, Columbia, South Carolina 29208, USA
| | - W Xu
- Department of Physics, University of South Dakota, Vermillion, South Dakota 57069, USA
| | - E Yakushev
- Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - C-H Yu
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - V Yumatov
- National Research Center "Kurchatov Institute" Institute for Theoretical and Experimental Physics, Moscow 117218, Russia
| | - I Zhitnikov
- Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - B X Zhu
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
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11
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Aalseth CE, Abgrall N, Aguayo E, Alvis SI, Amman M, Arnquist IJ, Avignone FT, Back HO, Barabash AS, Barbeau PS, Barton CJ, Barton PJ, Bertrand FE, Bode T, Bos B, Boswell M, Bradley AW, Brodzinski RL, Brudanin V, Busch M, Buuck M, Caldwell AS, Caldwell TS, Chan YD, Christofferson CD, Chu PH, Collar JI, Combs DC, Cooper RJ, Cuesta C, Detwiler JA, Doe PJ, Dunmore JA, Efremenko Y, Ejiri H, Elliott SR, Fast JE, Finnerty P, Fraenkle FM, Fu Z, Fujikawa BK, Fuller E, Galindo-Uribarri A, Gehman VM, Gilliss T, Giovanetti GK, Goett J, Green MP, Gruszko J, Guinn IS, Guiseppe VE, Hallin AL, Haufe CR, Hehn L, Henning R, Hoppe EW, Hossbach TW, Howe MA, Jasinski BR, Johnson RA, Keeter KJ, Kephart JD, Kidd MF, Knecht A, Konovalov SI, Kouzes RT, LaFerriere BD, Leon J, Lesko KT, Leviner LE, Loach JC, Lopez AM, Luke PN, MacMullin J, MacMullin S, Marino MG, Martin RD, Massarczyk R, McDonald AB, Mei DM, Meijer SJ, Merriman JH, Mertens S, Miley HS, Miller ML, Myslik J, Orrell JL, O'Shaughnessy C, Othman G, Overman NR, Perumpilly G, Pettus W, Phillips DG, Poon AWP, Pushkin K, Radford DC, Rager J, Reeves JH, Reine AL, Rielage K, Robertson RGH, Ronquest MC, Ruof NW, Schubert AG, Shanks B, Shirchenko M, Snavely KJ, Snyder N, Steele D, Suriano AM, Tedeschi D, Tornow W, Trimble JE, Varner RL, Vasilyev S, Vetter K, Vorren K, White BR, Wilkerson JF, Wiseman C, Xu W, Yakushev E, Yaver H, Young AR, Yu CH, Yumatov V, Zhitnikov I, Zhu BX, Zimmermann S. Search for Neutrinoless Double-β Decay in ^{76}Ge with the Majorana Demonstrator. Phys Rev Lett 2018; 120:132502. [PMID: 29694188 DOI: 10.1103/physrevlett.120.132502] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Revised: 01/09/2018] [Indexed: 06/08/2023]
Abstract
The Majorana Collaboration is operating an array of high purity Ge detectors to search for neutrinoless double-β decay in ^{76}Ge. The Majorana Demonstrator comprises 44.1 kg of Ge detectors (29.7 kg enriched in ^{76}Ge) split between two modules contained in a low background shield at the Sanford Underground Research Facility in Lead, South Dakota. Here we present results from data taken during construction, commissioning, and the start of full operations. We achieve unprecedented energy resolution of 2.5 keV FWHM at Q_{ββ} and a very low background with no observed candidate events in 9.95 kg yr of enriched Ge exposure, resulting in a lower limit on the half-life of 1.9×10^{25} yr (90% C.L.). This result constrains the effective Majorana neutrino mass to below 240-520 meV, depending on the matrix elements used. In our experimental configuration with the lowest background, the background is 4.0_{-2.5}^{+3.1} counts/(FWHM t yr).
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Affiliation(s)
- C E Aalseth
- Pacific Northwest National Laboratory, Richland, Washington 99354, USA
| | - N Abgrall
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - E Aguayo
- Pacific Northwest National Laboratory, Richland, Washington 99354, USA
| | - S I Alvis
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - M Amman
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - I J Arnquist
- Pacific Northwest National Laboratory, Richland, Washington 99354, USA
| | - F T Avignone
- Department of Physics and Astronomy, University of South Carolina, Columbia, South Carolina 29208, USA
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - H O Back
- Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - A S Barabash
- National Research Center "Kurchatov Institute" Institute for Theoretical and Experimental Physics, Moscow, 117218 Russia
| | - P S Barbeau
- Department of Physics, University of Chicago, Chicago, Illinois 60637, USA
| | - C J Barton
- Department of Physics, University of South Dakota, Vermillion, South Dakota 57069, USA
| | - P J Barton
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - F E Bertrand
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - T Bode
- Max-Planck-Institut für Physik, München, 80805 Germany
| | - B Bos
- South Dakota School of Mines and Technology, Rapid City, South Dakota 57701, USA
| | - M Boswell
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
| | - A W Bradley
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - R L Brodzinski
- Pacific Northwest National Laboratory, Richland, Washington 99354, USA
| | - V Brudanin
- Joint Institute for Nuclear Research, Dubna, 141980 Russia
| | - M Busch
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics, Duke University, Durham, North Carolina 27708, USA
| | - M Buuck
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - A S Caldwell
- South Dakota School of Mines and Technology, Rapid City, South Dakota 57701, USA
| | - T S Caldwell
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
| | - Y-D Chan
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - C D Christofferson
- South Dakota School of Mines and Technology, Rapid City, South Dakota 57701, USA
| | - P-H Chu
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - J I Collar
- Department of Physics, University of Chicago, Chicago, Illinois 60637, USA
| | - D C Combs
- Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - R J Cooper
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - C Cuesta
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - J A Detwiler
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - P J Doe
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - J A Dunmore
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - Yu Efremenko
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37916, USA
| | - H Ejiri
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - S R Elliott
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - J E Fast
- Pacific Northwest National Laboratory, Richland, Washington 99354, USA
| | - P Finnerty
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
| | - F M Fraenkle
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
| | - Z Fu
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - B K Fujikawa
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - E Fuller
- Pacific Northwest National Laboratory, Richland, Washington 99354, USA
| | | | - V M Gehman
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - T Gilliss
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
| | - G K Giovanetti
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
- Department of Physics, Princeton University, Princeton, New Jersey 08544, USA
| | - J Goett
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - M P Green
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
- Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
| | - J Gruszko
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - I S Guinn
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - V E Guiseppe
- Department of Physics and Astronomy, University of South Carolina, Columbia, South Carolina 29208, USA
- Department of Physics, University of South Dakota, Vermillion, South Dakota 57069, USA
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - A L Hallin
- Centre for Particle Physics, University of Alberta, Edmonton, Alberta T6G 2E1, Canada
| | - C R Haufe
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
| | - L Hehn
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - R Henning
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
| | - E W Hoppe
- Pacific Northwest National Laboratory, Richland, Washington 99354, USA
| | - T W Hossbach
- Pacific Northwest National Laboratory, Richland, Washington 99354, USA
| | - M A Howe
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
| | - B R Jasinski
- Department of Physics, University of South Dakota, Vermillion, South Dakota 57069, USA
| | - R A Johnson
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - K J Keeter
- Department of Physics, Black Hills State University, Spearfish, South Dakota 57799, USA
| | - J D Kephart
- Pacific Northwest National Laboratory, Richland, Washington 99354, USA
| | - M F Kidd
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
- Tennessee Tech University, Cookeville, Tennessee 38505, USA
| | - A Knecht
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - S I Konovalov
- National Research Center "Kurchatov Institute" Institute for Theoretical and Experimental Physics, Moscow, 117218 Russia
| | - R T Kouzes
- Pacific Northwest National Laboratory, Richland, Washington 99354, USA
| | - B D LaFerriere
- Pacific Northwest National Laboratory, Richland, Washington 99354, USA
| | - J Leon
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - K T Lesko
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - L E Leviner
- Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - J C Loach
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Shanghai Jiao Tong University, Shanghai 200240, China
| | - A M Lopez
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37916, USA
| | - P N Luke
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - J MacMullin
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
| | - S MacMullin
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
| | - M G Marino
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - R D Martin
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Department of Physics, Engineering Physics and Astronomy, Queen's University, Kingston, Ontario K7L 3N6, Canada
| | - R Massarczyk
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - A B McDonald
- Department of Physics, Engineering Physics and Astronomy, Queen's University, Kingston, Ontario K7L 3N6, Canada
| | - D-M Mei
- Department of Physics, University of South Dakota, Vermillion, South Dakota 57069, USA
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - S J Meijer
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
| | - J H Merriman
- Pacific Northwest National Laboratory, Richland, Washington 99354, USA
| | - S Mertens
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Max-Planck-Institut für Physik, München, 80805 Germany
- Physik Department and Excellence Cluster Universe, Technische Universität, München, 85748 Germany
| | - H S Miley
- Pacific Northwest National Laboratory, Richland, Washington 99354, USA
| | - M L Miller
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - J Myslik
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - J L Orrell
- Pacific Northwest National Laboratory, Richland, Washington 99354, USA
| | - C O'Shaughnessy
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
| | - G Othman
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
| | - N R Overman
- Pacific Northwest National Laboratory, Richland, Washington 99354, USA
| | - G Perumpilly
- Department of Physics, University of South Dakota, Vermillion, South Dakota 57069, USA
| | - W Pettus
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - D G Phillips
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
| | - A W P Poon
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - K Pushkin
- Department of Physics, University of South Dakota, Vermillion, South Dakota 57069, USA
| | - D C Radford
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - J Rager
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
| | - J H Reeves
- Pacific Northwest National Laboratory, Richland, Washington 99354, USA
| | - A L Reine
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
| | - K Rielage
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - R G H Robertson
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - M C Ronquest
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - N W Ruof
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - A G Schubert
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - B Shanks
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
| | - M Shirchenko
- Joint Institute for Nuclear Research, Dubna, 141980 Russia
| | - K J Snavely
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
| | - N Snyder
- Department of Physics, University of South Dakota, Vermillion, South Dakota 57069, USA
| | - D Steele
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - A M Suriano
- South Dakota School of Mines and Technology, Rapid City, South Dakota 57701, USA
| | - D Tedeschi
- Department of Physics and Astronomy, University of South Carolina, Columbia, South Carolina 29208, USA
| | - W Tornow
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics, Duke University, Durham, North Carolina 27708, USA
| | - J E Trimble
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
| | - R L Varner
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - S Vasilyev
- Joint Institute for Nuclear Research, Dubna, 141980 Russia
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37916, USA
| | - K Vetter
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Department of Nuclear Engineering, University of California, Berkeley, California 94720, USA
| | - K Vorren
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
| | - B R White
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - J F Wilkerson
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
| | - C Wiseman
- Department of Physics and Astronomy, University of South Carolina, Columbia, South Carolina 29208, USA
| | - W Xu
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics, University of South Dakota, Vermillion, South Dakota 57069, USA
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA
| | - E Yakushev
- Joint Institute for Nuclear Research, Dubna, 141980 Russia
| | - H Yaver
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - A R Young
- Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - C-H Yu
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
| | - V Yumatov
- National Research Center "Kurchatov Institute" Institute for Theoretical and Experimental Physics, Moscow, 117218 Russia
| | - I Zhitnikov
- Joint Institute for Nuclear Research, Dubna, 141980 Russia
| | - B X Zhu
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - S Zimmermann
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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12
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Abgrall N, Arnquist IJ, Avignone FT, Barabash AS, Bertrand FE, Bradley AW, Brudanin V, Busch M, Buuck M, Caldwell TS, Chan YD, Christofferson CD, Chu PH, Cuesta C, Detwiler JA, Dunagan C, Efremenko Y, Ejiri H, Elliott SR, Gilliss T, Giovanetti GK, Goett J, Green MP, Gruszko J, Guinn IS, Guiseppe VE, Haufe CRS, Henning R, Hoppe EW, Howard S, Howe MA, Jasinski BR, Keeter KJ, Kidd MF, Konovalov SI, Kouzes RT, Lopez AM, MacMullin J, Martin RD, Massarczyk R, Meijer SJ, Mertens S, O'Shaughnessy C, Poon AWP, Radford DC, Rager J, Reine AL, Rielage K, Robertson RGH, Shanks B, Shirchenko M, Suriano AM, Tedeschi D, Trimble JE, Varner RL, Vasilyev S, Vetter K, Vorren K, White BR, Wilkerson JF, Wiseman C, Xu W, Yakushev E, Yu CH, Yumatov V, Zhitnikov I, Zhu BX. New Limits on Bosonic Dark Matter, Solar Axions, Pauli Exclusion Principle Violation, and Electron Decay from the Majorana Demonstrator. Phys Rev Lett 2017; 118:161801. [PMID: 28474933 DOI: 10.1103/physrevlett.118.161801] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Indexed: 06/07/2023]
Abstract
We present new limits on exotic keV-scale physics based on 478 kg d of Majorana Demonstrator commissioning data. Constraints at the 90% confidence level are derived on bosonic dark matter (DM) and solar axion couplings, Pauli exclusion principle violating (PEPV) decay, and electron decay using monoenergetic peak signal limits above our background. Our most stringent DM constraints are set for 11.8 keV mass particles, limiting g_{Ae}<4.5×10^{-13} for pseudoscalars and (α^{'}/α)<9.7×10^{-28} for vectors. We also report a 14.4 keV solar axion coupling limit of g_{AN}^{eff}×g_{Ae}<3.8×10^{-17}, a 1/2β^{2}<8.5×10^{-48} limit on the strength of PEPV electron transitions, and a lower limit on the electron lifetime of τ_{e}>1.2×10^{24} yr for e^{-}→ invisible.
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Affiliation(s)
- N Abgrall
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - I J Arnquist
- Pacific Northwest National Laboratory, Richland, Washington 99352, USA
| | - F T Avignone
- Department of Physics and Astronomy, University of South Carolina, Columbia, South Carolina 29208, USA
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - A S Barabash
- National Research Center "Kurchatov Institute" Institute for Theoretical and Experimental Physics, Moscow 117218, Russia
| | - F E Bertrand
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - A W Bradley
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - V Brudanin
- Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - M Busch
- Department of Physics, Duke University, Durham, North Carolina 27708, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - M Buuck
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - T S Caldwell
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27599, USA
| | - Y-D Chan
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - C D Christofferson
- South Dakota School of Mines and Technology, Rapid City, South Dakota 57701, USA
| | - P-H Chu
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - C Cuesta
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - J A Detwiler
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - C Dunagan
- South Dakota School of Mines and Technology, Rapid City, South Dakota 57701, USA
| | - Yu Efremenko
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - H Ejiri
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - S R Elliott
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - T Gilliss
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27599, USA
| | - G K Giovanetti
- Department of Physics, Princeton University, Princeton, New Jersey 08544, USA
| | - J Goett
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - M P Green
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA
| | - J Gruszko
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - I S Guinn
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - V E Guiseppe
- Department of Physics and Astronomy, University of South Carolina, Columbia, South Carolina 29208, USA
| | - C R S Haufe
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27599, USA
| | - R Henning
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27599, USA
| | - E W Hoppe
- Pacific Northwest National Laboratory, Richland, Washington 99352, USA
| | - S Howard
- South Dakota School of Mines and Technology, Rapid City, South Dakota 57701, USA
| | - M A Howe
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27599, USA
| | - B R Jasinski
- Department of Physics, University of South Dakota, Vermillion, South Dakota 57069, USA
| | - K J Keeter
- Department of Physics, Black Hills State University, Spearfish, South Dakota 57799, USA
| | - M F Kidd
- Tennessee Tech University, Cookeville, Tennessee 38505, USA
| | - S I Konovalov
- National Research Center "Kurchatov Institute" Institute for Theoretical and Experimental Physics, Moscow 117218, Russia
| | - R T Kouzes
- Pacific Northwest National Laboratory, Richland, Washington 99352, USA
| | - A M Lopez
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - J MacMullin
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27599, USA
| | - R D Martin
- Department of Physics, Engineering Physics and Astronomy, Queen's University, Kingston, Ontario K7L 3N6, Canada
| | - R Massarczyk
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - S J Meijer
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27599, USA
| | - S Mertens
- Max-Planck-Institut für Physik, München 80805, Germany
- Physik Department and Excellence Cluster Universe, Technische Universität, München 80805, Germany
| | - C O'Shaughnessy
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27599, USA
| | - A W P Poon
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - D C Radford
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - J Rager
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27599, USA
| | - A L Reine
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27599, USA
| | - K Rielage
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - R G H Robertson
- Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - B Shanks
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27599, USA
| | - M Shirchenko
- Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - A M Suriano
- South Dakota School of Mines and Technology, Rapid City, South Dakota 57701, USA
| | - D Tedeschi
- Department of Physics and Astronomy, University of South Carolina, Columbia, South Carolina 29208, USA
| | - J E Trimble
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27599, USA
| | - R L Varner
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - S Vasilyev
- Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - K Vetter
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - K Vorren
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27599, USA
| | - B R White
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - J F Wilkerson
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
- Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27599, USA
| | - C Wiseman
- Department of Physics and Astronomy, University of South Carolina, Columbia, South Carolina 29208, USA
| | - W Xu
- Department of Physics, University of South Dakota, Vermillion, South Dakota 57069, USA
| | - E Yakushev
- Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - C-H Yu
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - V Yumatov
- National Research Center "Kurchatov Institute" Institute for Theoretical and Experimental Physics, Moscow 117218, Russia
| | - I Zhitnikov
- Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - B X Zhu
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
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Kligler B, Brooks AJ, Maizes V, Goldblatt E, Klatt M, Koithan MS, Kreitzer MJ, Lee JK, Lopez AM, McClafferty H, Rhode R, Sandvold I, Saper R, Taren D, Wells E, Lebensohn P. Interprofessional Competencies in Integrative Primary Healthcare. Glob Adv Health Med 2015; 4:33-9. [PMID: 26421232 PMCID: PMC4563887 DOI: 10.7453/gahmj.2015.064] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
In October 2014, the National Center for Integrative Primary Healthcare (NCIPH) was launched as a collaboration between the University of Arizona Center for Integrative Medicine and the Academic Consortium for Integrative Health and Medicine and supported by a grant from the Health Resources and Services Administration. A primary goal of the NCIPH is to develop a core set of integrative healthcare (IH) competencies and educational programs that will span the interprofessional primary care training and practice spectra and ultimately become a required part of primary care education. This article reports on the first phase of the NCIPH effort, which focused on the development of a shared set of competencies in IH for primary care disciplines. The process of development, refinement, and adoption of 10 "meta-competencies" through a collaborative process involving a diverse interprofessional team is described. Team members represent nursing, the primary care medicine professions, pharmacy, public health, acupuncture, naturopathy, chiropractic, nutrition, and behavioral medicine. Examples of the discipline-specific sub-competencies being developed within each of the participating professions are provided, along with initial results of an assessment of potential barriers and facilitators of adoption within each discipline. The competencies presented here will form the basis of a 45-hour online curriculum produced by the NCIPH for use in primary care training programs that will be piloted in a wide range of programs in early 2016 and then revised for wider use over the following year.
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Affiliation(s)
- Benjamin Kligler
- Mount Sinai Beth Israel Department of Integrative Medicine, New York, United States (Dr Kligler)
| | - Audrey J Brooks
- Arizona Center for Integrative Medicine, University of Arizona, Tucson, United States (Dr Brooks)
| | - Victoria Maizes
- Arizona Center for Integrative Medicine, University of Arizona, Tucson, United States (Dr Maizes)
| | - Elizabeth Goldblatt
- Academic Consortium for Complementary & Alternative Health Care, Seattle, Washington, United States (Dr Goldblatt)
| | - Maryanna Klatt
- Department of Family Medicine, The Ohio State University College of Medicine, Columbus, United States (Dr Klatt)
| | - Mary S Koithan
- Department of Family and Community Medicine, University of Arizona, United States (Dr Koithan)
| | - Mary Jo Kreitzer
- Center for Spirituality & Healing, School of Nursing, University of Minnesota, Minneapolis (Dr Kreitzer)
| | - Jeannie K Lee
- Department of Pharmacy Practice & Science, College of Pharmacy, University of Arizona, United States (Dr Lee)
| | - Ana Marie Lopez
- University of Utah Health Sciences Center, Huntsman Cancer Institute, University of Utah School of Medicine, Salt Lake City, United States (Dr Lopez)
| | - Hilary McClafferty
- Arizona Center for Integrative Medicine, University of Arizona, Tucson, United States (Dr McClafferty)
| | - Robert Rhode
- Department of Psychiatry, University of Arizona, Tucson, United States (Dr Rhode)
| | - Irene Sandvold
- Medical Training and Geriatrics Branch, Division of Medicine and Dentistry, Bureau of Health Workforce, Health Resources and Services Administration, Department of Health and Human Services, Rockville, Maryland, United States (Dr Sandvold)
| | - Robert Saper
- School of Medicine, Boston University, Massachusetts, Academic Consortium for Integrative Medicine and Health, McLean, Virginia, United States (Dr Saper)
| | - Douglas Taren
- Mel and Enid Zuckerman College of Public Health, University of Arizona, United States (Dr Taren)
| | - Eden Wells
- School of Public Health, University of Michigan, Ann Arbor, United States (Dr Wells)
| | - Patricia Lebensohn
- Arizona Center for Integrative Medicine, University of Arizona, Tucson, United States (Dr Lebensohn)
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Sala-Blanch X, Lopez AM, Vandepitte C. Safety algorithms for ultrasound-guided blocks: the next challenge. Rev Esp Anestesiol Reanim 2015; 62:116-117. [PMID: 24952830 DOI: 10.1016/j.redar.2014.04.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Accepted: 04/07/2014] [Indexed: 06/03/2023]
Affiliation(s)
- X Sala-Blanch
- Servicio de Anestesiología, Hospital Clínic, Barcelona, Unidad de Anatomía y Embriología Humana, Facultad de Medicina, Universitat de Barcelona, Spain.
| | - A M Lopez
- Servicio de Anestesiología, Hospital Clínic, Universitat de Barcelona, Spain
| | - C Vandepitte
- Department of Anesthesia, Ziekenhuis Oost-Limburg (ZOL), Genk, Belgium
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15
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Lopez AM, Sala-Blanch X, Castillo R, Hadzic A. Ultrasound guided injection inside the common sheath of the sciatic nerve at division level has a higher success rate than an injection outside the sheath. Rev Esp Anestesiol Reanim 2014; 61:304-310. [PMID: 24556512 DOI: 10.1016/j.redar.2013.11.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2013] [Revised: 11/06/2013] [Accepted: 11/16/2013] [Indexed: 06/03/2023]
Abstract
BACKGROUND AND OBJECTIVE The recommendations for the level of injection and ideal placement of the needle tip required for successful ultrasound-guided sciatic popliteal block vary among authors. A hypothesis was made that, when the local anesthetic is injected at the division of the sciatic nerve within the common connective tissue sheath, the block has a higher success rate than an injection outside the sheath. METHODS Thirty-four patients scheduled for hallux valgus repair surgery were randomized to receive either a sub-sheath block (n=16) or a peri-sheath block (n=18) at the level of the division of the sciatic nerve at the popliteal fossa. For the sub-sheath block, the needle was advanced out of plane until the tip was positioned between the tibial and peroneal nerves, and local anesthetic was then injected without moving the needle. For the peri-sheath block, the needle was advanced out of plane both sides of the sciatic nerve, to surround the sheath. Mepivacaine 1.5% and levobupivacaine 0.5% 30mL were used in both groups. The progression of motor and sensory block was assessed at 5min intervals. Duration of block was recorded. RESULTS Adequate surgical block was achieved in all patients in the subsheath group (100%) compared to 12 patients (67%) in the peri-sheath group at 30min. Sensory block was achieved faster in the subsheath than peri-sheath (9.1±7.4min vs. 19.0±4.0; p<.001). CONCLUSIONS Our study suggests that for successful sciatic popliteal block in less than 30min, local anesthetic should be injected within the sheath.
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Affiliation(s)
- A M Lopez
- Department of Anesthesiology, Hospital Clínic Barcelona, Barcelona, Spain.
| | - X Sala-Blanch
- Department of Anesthesiology, Hospital Clínic Barcelona, Barcelona, Spain
| | - R Castillo
- Department of Anesthesiology, Hospital Clínic Barcelona, Barcelona, Spain
| | - A Hadzic
- Department of Anesthesiology, St Luke's-Roosevelt Hospital, College of Physicians and Surgeons, Columbia University, New York, USA
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Chaudhury A, Laukaitis C, Mauss C, Walsh T, Casadei S, Thompson P, Lopez AM, Navarro AD, King MC. Abstract P3-07-05: Frequent BRCA1 and BRCA2 mutations are found in Mexican and Mexican-American women with breast cancer. Cancer Res 2013. [DOI: 10.1158/0008-5472.sabcs13-p3-07-05] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: The Arizona Cancer Registry has shown that in Pima County, AZ, breast cancer diagnosed in young Latinas increased 40% from 2004-2008, compared to 1999-2003, and Latinas more likely to die of their cancer. This study seeks to characterize genetic variation in women of Mexican ancestry with breast cancer using next generation sequencing, with the goal of providing prevalence information to help guide screening and cancer prevention efforts.
Methods: The ELLA Binational Breast Cancer Study enrolled women of Mexican ancestry living in either U.S. or Mexico within 24 months of breast cancer diagnosis. Mexican women from the state of Jalisco were collected through collaboration with the Universidad de Guadalajara and women of Mexican ancestry were recruited from Tucson and Phoenix, AZ. Genomic DNA from 92 ELLA study participants (49 from the U.S. and 43 from Mexico) was enriched for breast cancer influencing gene sequence using the BROCA panel with standard techniques. Samples were sequenced with next generation sequencing and variants identified.
Results: Sequencing of breast cancer risk genes in 92 Mexican and Mexican-American women with breast cancer revealed the presence of deleterious mutations in 15% of women (14/92). Five carry mutations in BRCA1, 5 in BRCA2, 2 in CHEK2, 1 in PALB2 and 1 in RAD51C. An additional 9% of participants (8/92) carry rare mutations of unknown functional consequence in the same genes. Four carry mutations in BRCA1 or BRCA2 at sites predicted to alter splice enhancers and four carry missense mutations in CHEK2 that are predicted to damage to kinase function. None of these variants appear in public databases or are characterized functionally in gene-specific databases. Dozens of women carry VUS or novel variants.
Women carrying BRCA1 mutations are significantly more likely to have had triple negative pathology. Women carrying other mutations known or thought to be deleterious are also more likely to have been younger at diagnosis, to have more aggressive breast cancer or to report a family history of breast cancer.
Table 1. Deleterious MutationsGeneEffectTotalBRCA1185delAG1BRCA12569delC2BRCA1Del Complete Gene1BRCA1Del Exons 9-121BRCA2c.658delGT1BRCA2c.3264insT2BRCA2c.5195delT1BRCA2c.6024insG1CHEK2R160G2PALB2S779 Stop1RAD51CDel Exons 4-91
Conclusion: Deleterious BRCA1 and BRCA2 gene mutations are common among women of Mexican ancestry diagnosed with breast cancer. Within this cohort, the prevalence of BRCA1/2 mutations is 11%, and 4% of women carry mutations in other genes increasing breast cancer risk. This is higher than the 10% mutation prevalence estimated for Ashkenazi Jewish women with breast cancer. An additional 9% of women carry variants likely to disrupt gene function and dozens of VUS and novel variants are found in these women. Further analysis of samples from the remaining 942 women using genetic sequencing will help further elucidate the role of genetic risk factors in women of Mexican ancestry with breast cancer.
Citation Information: Cancer Res 2013;73(24 Suppl): Abstract nr P3-07-05.
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Affiliation(s)
- A Chaudhury
- University of Arizona, Tucson, AZ; University of Arizona Cancer Center, Tucson, AZ; University of Washington, Seattle, WA; Centro Universitario De Ciencias De La Salud Universidad De Guadalajara Sierra Mojada No 950, Edificio P Primer Niviel, Colonia Independencia, Guadalajara, Jalisco, Mexico
| | - C Laukaitis
- University of Arizona, Tucson, AZ; University of Arizona Cancer Center, Tucson, AZ; University of Washington, Seattle, WA; Centro Universitario De Ciencias De La Salud Universidad De Guadalajara Sierra Mojada No 950, Edificio P Primer Niviel, Colonia Independencia, Guadalajara, Jalisco, Mexico
| | - C Mauss
- University of Arizona, Tucson, AZ; University of Arizona Cancer Center, Tucson, AZ; University of Washington, Seattle, WA; Centro Universitario De Ciencias De La Salud Universidad De Guadalajara Sierra Mojada No 950, Edificio P Primer Niviel, Colonia Independencia, Guadalajara, Jalisco, Mexico
| | - T Walsh
- University of Arizona, Tucson, AZ; University of Arizona Cancer Center, Tucson, AZ; University of Washington, Seattle, WA; Centro Universitario De Ciencias De La Salud Universidad De Guadalajara Sierra Mojada No 950, Edificio P Primer Niviel, Colonia Independencia, Guadalajara, Jalisco, Mexico
| | - S Casadei
- University of Arizona, Tucson, AZ; University of Arizona Cancer Center, Tucson, AZ; University of Washington, Seattle, WA; Centro Universitario De Ciencias De La Salud Universidad De Guadalajara Sierra Mojada No 950, Edificio P Primer Niviel, Colonia Independencia, Guadalajara, Jalisco, Mexico
| | - P Thompson
- University of Arizona, Tucson, AZ; University of Arizona Cancer Center, Tucson, AZ; University of Washington, Seattle, WA; Centro Universitario De Ciencias De La Salud Universidad De Guadalajara Sierra Mojada No 950, Edificio P Primer Niviel, Colonia Independencia, Guadalajara, Jalisco, Mexico
| | - AM Lopez
- University of Arizona, Tucson, AZ; University of Arizona Cancer Center, Tucson, AZ; University of Washington, Seattle, WA; Centro Universitario De Ciencias De La Salud Universidad De Guadalajara Sierra Mojada No 950, Edificio P Primer Niviel, Colonia Independencia, Guadalajara, Jalisco, Mexico
| | - AD Navarro
- University of Arizona, Tucson, AZ; University of Arizona Cancer Center, Tucson, AZ; University of Washington, Seattle, WA; Centro Universitario De Ciencias De La Salud Universidad De Guadalajara Sierra Mojada No 950, Edificio P Primer Niviel, Colonia Independencia, Guadalajara, Jalisco, Mexico
| | - M-C King
- University of Arizona, Tucson, AZ; University of Arizona Cancer Center, Tucson, AZ; University of Washington, Seattle, WA; Centro Universitario De Ciencias De La Salud Universidad De Guadalajara Sierra Mojada No 950, Edificio P Primer Niviel, Colonia Independencia, Guadalajara, Jalisco, Mexico
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Ambati J, Lopez AM, Cochran D, Wattamwar P, Bean K, Dziubla TD, Rankin SE. Engineered silica nanocarriers as a high-payload delivery vehicle for antioxidant enzymes. Acta Biomater 2012; 8:2096-103. [PMID: 22366223 DOI: 10.1016/j.actbio.2012.02.012] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [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: 09/19/2011] [Revised: 02/08/2012] [Accepted: 02/13/2012] [Indexed: 12/13/2022]
Abstract
Antioxidant enzymes for the treatment of oxidative stress-related diseases remain a highly promising therapeutic approach. As poor localization and stability have been the greatest challenges to their clinical translation, a variety of nanocarrier systems have been developed to directly address these limitations. In most cases, there has been a trade-off between the delivered mass of enzyme loaded and the carrier's ability to protect the enzyme from proteolytic degradation. One potential method of overcoming this limitation is the use of ordered mesoporous silica materials as potential antioxidant enzyme nanocarriers. The present study compared the loading, activity and retention activity of an anti-oxidant enzyme, catalase, on four engineered mesoporous silica types: non-porous silica particles, spherical silica particles with radially oriented pores and hollow spherical silica particles with pores oriented either parallel to the hollow core or expanded, interconnected bimodal pores. All these silica types, except non-porous silica, displayed potential for effective catalase loading and protection against the proteolytic enzyme, pronase. Hollow particles with interconnected pores exhibit protein loading of up to 50 wt.% carrier mass, while still maintaining significant protection against proteolysis.
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Affiliation(s)
- J Ambati
- Chemical and Materials Engineering, University of Kentucky, Lexington, KY, USA
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18
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Lopez AM, Caeiro E, Medic M, Garzòn MI. [Evolution of lung transplant patient with autopsy results]. Rev Fac Cien Med Univ Nac Cordoba 2011; 68:72-78. [PMID: 22440661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023] Open
Affiliation(s)
- A M Lopez
- Servicio de Neumonología. Hospital Privado - CMC
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19
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Alencar MA, Lopez AM, Figueiredo E, Porciúncula CG, Monlleó I. E05 Prevalence of Huntington's disease in Feira Grande, a small city in Northeastern Brazil. J Neurol Neurosurg Psychiatry 2010. [DOI: 10.1136/jnnp.2010.22638.5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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20
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Chen Z, Maricic M, Aragaki AK, Mouton C, Arendell L, Lopez AM, Bassford T, Chlebowski RT. Fracture risk increases after diagnosis of breast or other cancers in postmenopausal women: results from the Women's Health Initiative. Osteoporos Int 2009; 20:527-36. [PMID: 18766294 PMCID: PMC2895418 DOI: 10.1007/s00198-008-0721-0] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2008] [Accepted: 06/12/2008] [Indexed: 11/30/2022]
Abstract
SUMMARY Risk for falls and fractures increases after breast cancer or other cancer diagnosis in postmenopausal women. Factors other than falls may be the major causes for the increased fracture risk. INTRODUCTION Cancer treatment and prognosis may have detrimental effects on bone health. However, there is a lack of prospective investigations on fracture risk among incident cancer cases. METHODS In this study, postmenopausal women (N = 146,959) from the Women's Health Initiative prospective cohort, who had no cancer history at baseline, were followed for up to 9 years and classified into no cancer, incident breast cancer (BC) and incident other cancer (OC) groups. The main outcomes measured were incident fractures and falls before and after cancer diagnosis. Hazards ratios (HR) and 95% confidence intervals (CI) were computed from Cox proportional hazards model. RESULTS While hip fracture risk before a cancer diagnosis was similar between the no cancer and cancer groups, hip fracture risk was significantly higher after BC diagnosis (HR = 1.55, CI = 1.13-2.11) and the elevated risk was even more notable after OC diagnosis (HR = 2.09, CI = 1.65-2.65). Risk of falls also increased after BC (HR = 1.15, CI = 1.06-1.25) or OC diagnosis (HR = 1.27, CI = 1.18-1.36), but could not fully explain the elevated hip fracture risk. Incident clinical vertebral and total fractures were also significantly increased after OC diagnosis (p < 0.05). CONCLUSIONS Postmenopausal women have significantly elevated risks for falls and fractures after a cancer diagnosis. The causes for this increased risk remained to be investigated.
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Affiliation(s)
- Z Chen
- Division of Epidemiology and Biostatistics, University of Arizona Mel and Enid Zuckerman College of Public Health, Tucson, AZ 85724-5211, USA.
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21
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Otieno FG, Lopez AM, Jimenez SA, Gentiletti J, Artlett CM. Allograft inflammatory factor-1 and tumor necrosis factor single nucleotide polymorphisms in systemic sclerosis. ACTA ACUST UNITED AC 2007; 69:583-91. [PMID: 17498268 DOI: 10.1111/j.1399-0039.2007.00830.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [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: 11/30/2022]
Abstract
Tumor necrosis factor (TNF) alleles have been associated with systemic sclerosis (SSc); however, these alleles may be in linkage with other genes. Allograft inflammatory factor-1 (AIF-1) is a newly identified gene on the short arm of chromosome 6 in the class III region of the human leukocyte antigen. It appears to be involved in inflammation and was originally identified in rat cardiac allografts undergoing rejection. AIF-1 has several sequence variations (single nucleotide polymorphisms, SNPs), three of which result in nonsynonymous changes in amino acid coding. We analyzed the linkage of five TNFA and five AIF-1 SNPs by polymerase chain reaction in 239 Caucasian individuals. The TNFA-1031T/T genotype was found to be associated with SSc (P < 0.0001) and both the DcSSc (diffuse subset of SSc) and the LcSSc (limited subset of SSc) subsets (P= 0.0004 and P= 0.0009, respectively) and the TNFA-237G/G genotype was found to be associated with all SSc (P= 0.0003) and with the DcSSc and LcSSc subsets (P= 0.01 and P= 0.005, respectively). Furthermore, the TNFA-857C/T genotype was associated with LcSSc (P= 0.0003) and TNFA-307A/A genotype associated with DcSSc (P= 0.028). In AIF-1, RS2269475 exon 4A allele, which generates a nonsynonymous change (tryptophan to arginine), was significantly associated in patients with SSc (P= 0.0009) and was associated with those patients who had DcSSc (P= 0.002). A strong linkage disequilibrium was observed between the AIF-1 alleles, A allele of RS2269475 and the A allele of RS4711274 (P < 0.0001), and linkage was observed between AIF-1 and TNFA alleles. Here, we report a novel and significant association of a nonsynonymous change within the AIF-1 with SSc and identified the linkage with TNFA alleles within 50 kb of this gene. Our study lends support that TNFA may be an important inflammatory modulator in SSc and may play a significant role with AIF-1 in disease pathogenesis.
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Affiliation(s)
- F G Otieno
- Division of Rheumatology, Department of Medicine, Thomas Jefferson University, Philadelphia, PA, USA
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Lopez AM, Hecker R, Mutwiri G, van Drunen Littel-van den Hurk S, Babiuk LA, Townsend HGG. Formulation with CpG ODN enhances antibody responses to an equine influenza virus vaccine. Vet Immunol Immunopathol 2006; 114:103-10. [PMID: 16950519 DOI: 10.1016/j.vetimm.2006.07.013] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [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: 03/08/2006] [Accepted: 07/28/2006] [Indexed: 11/23/2022]
Abstract
Previous studies have shown that protection against equine influenza virus (EIV) is partially mediated by virus-specific IgGa and IgGb. In this study we tested whether addition of a CpG ODN formulation to a commercial killed virus vaccine would enhance EIV-specific IgGa and IgGb antibody responses, and improve protection against an experimental EIV challenge. Thirty naïve horses were assigned to one of three groups and vaccinated as follows: 10 were given vaccine (Encevac TC4, Intervet Inc.) alone, 10 were given vaccine plus 0.25 mg CpG ODN 2007 formulated with 30% Emulsigen (CpG/Em), and 10 controls were given saline. All horses were challenged with live virus 12 weeks after the final vaccination. Antibody responses were tested by single radial hemolysis (SRH) and ELISA, and protection was evaluated by determination of temperature, coughing, and clinical scores. Killed virus vaccine combined with CpG/Em induced significantly greater serologic responses than did the vaccine alone. All antibody isotypes tested increased after the addition of CpG/Em, although no shift in relative antibody isotypes concentrations was detected. Vaccination significantly improved protection against challenge but the differences between the two vaccine groups were not statistically significant. This study is the first demonstration that CpG/Em enhances antigen-specific antibody responses in horses and supports its potential to be used as an adjuvant for vaccines against equine infections.
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Affiliation(s)
- A M Lopez
- Vaccine and Infectious Disease Organization, University of Saskatchewan, Saskatoon, Sask., S7N 5E3 Canada.
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Link JM, Yager PM, Anjos JC, Bediaga I, Castromonte C, Machado AA, Magnin J, Massafferi A, de Miranda JM, Pepe IM, Polycarpo E, dos Reis AC, Carrillo S, Casimiro E, Cuautle E, Sánchez-Hernández A, Uribe C, Vázquez F, Agostino L, Cinquini L, Cumalat JP, O'Reilly B, Segoni I, Stenson K, Butler JN, Cheung HWK, Chiodini G, Gaines I, Garbincius PH, Garren LA, Gottschalk E, Kasper PH, Kreymer AE, Kutschke R, Wang M, Benussi L, Bertani M, Bianco S, Fabbri FL, Pacetti S, Zallo A, Reyes M, Cawlfield C, Kim DY, Rahimi A, Wiss J, Gardner R, Kryemadhi A, Chung YS, Kang JS, Ko BR, Kwak JW, Lee KB, Cho K, Park H, Alimonti G, Barberis S, Boschini M, Cerutti A, D'Angelo P, DiCorato M, Dini P, Edera L, Erba S, Inzani P, Leveraro F, Malvezzi S, Menasce D, Mezzadri M, Milazzo L, Moroni L, Pedrini D, Pontoglio C, Prelz F, Rovere M, Sala S, Davenport TF, Arena V, Boca G, Bonomi G, Gianini G, Liguori G, Pegna DL, Merlo MM, Pantea D, Ratti SP, Riccardi C, Vitulo P, Göbel C, Hernandez H, Lopez AM, Mendez H, Paris A, Quinones J, Ramirez JE, Zhang Y, Wilson JR, Handler T, Mitchell R, Engh D, Hosack M, Johns WE, Luiggi E, Moore JE, Nehring M, Sheldon PD, Vaandering EW, Webster M, Sheaff M. Measurement of the D(s)+ lifetime. Phys Rev Lett 2005; 95:052003. [PMID: 16090867 DOI: 10.1103/physrevlett.95.052003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2005] [Indexed: 05/03/2023]
Abstract
A high statistics measurement of the D(s)+ lifetime from the Fermilab fixed-target FOCUS photoproduction experiment is presented. We describe the analysis of the two decay modes, D(s)+ --> phi(1020)pi+ and D(s)+ -->K*(892)0K+, used for the measurement. The measured lifetime is 507.4 +/- 5.5(stat) +/- 5.1(syst) fs using 8961 +/- 105 D(s)+ --> phi(1020)pi+ and 4680 +/- 90 D(s)+ --> K*(892)0K+ decays. This is a significant improvement over the present world average.
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Affiliation(s)
- J M Link
- University of California, Davis, California 95616, USA
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Morimoto LM, White E, Chen Z, Chlebowski RT, Hays J, Kuller L, Lopez AM, Manson J, Margolis KL, Muti PC, Stefanick ML, McTiernan A. Obesity, body size, and risk of postmenopausal breast cancer: the Women's Health Initiative (United States). Cancer Causes Control 2002; 13:741-51. [PMID: 12420953 DOI: 10.1023/a:1020239211145] [Citation(s) in RCA: 417] [Impact Index Per Article: 19.0] [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: 11/12/2022]
Abstract
OBJECTIVE Body size is an important modifiable risk factor for breast cancer. Although obesity has generally been found to be associated with increased risk for postmenopausal breast cancer, there remain questions concerning the role of body fat distribution, lifetime weight history, and effects within specific subgroups of women. METHODS We assessed the relationship of several anthropometric measures and risk of postmenopausal breast cancer in 85,917 women aged 50-79 at entry in the Women's Health Initiative Observational Study. Women were enrolled during 1993-1998 at 40 clinics in the US and 1030 developed invasive breast cancer by April 2000. Upon entry, trained clinical center staff measured each woman's height, weight, and waist and hip circumference. RESULTS Anthropometric factors were not associated with breast cancer among women who had ever used hormone replacement therapy (HRT). Among HRT non-users, heavier women (baseline body mass index (BMI) >31.1) had an elevated risk of postmenopausal breast cancer (relative risk (RR) = 2.52; 95% confidence interval (CI) = 1.62-3.93), compared to slimmer women (baseline BMI < 22.6). The elevation in risk associated with increasing BMI appeared to be most pronounced among younger postmenopausal women. Change in BMI since age 18, maximum BMI, and weight were also associated with breast cancer in HRT non-users. While both waist and hip circumference were associated with breast cancer risk, their ratio, a measure of fat distribution, was not (RR = 1.33; 95% CI = 0.88-2.01). CONCLUSIONS Our study confirms previously reported findings that generalized obesity is an important risk factor for postmenopausal breast cancer, but only among women who have never taken HRT. Lifetime weight gain is also a strong predictor of breast cancer. Waist to hip ratio, a measure of weight distribution, does not appear to be related to postmenopausal breast cancer risk.
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Link JM, Reyes M, Yager PM, Anjos JC, Bediaga I, Göbel C, Magnin J, Massafferi A, de Miranda JM, Pepe IM, dos Reis AC, Carrillo S, Casimiro E, Cuautle E, Sánchez-Hernández A, Uribe C, Vazquez F, Agostino L, Cinquini L, Cumalat JP, O'Reilly B, Ramirez JE, Segoni I, Butler JN, Cheung HWK, Gaines I, Garbincius PH, Garren LA, Gottschalk E, Kasper PH, Kreymer AE, Kutschke R, Bianco S, Fabbri FL, Zallo A, Cawlfield C, Kim DY, Rahimi A, Wiss J, Gardner R, Kryemadhi A, Chung YS, Kang JS, Ko BR, Kwak JW, Lee KB, Park H, Alimonti G, Boschini M, D'Angelo P, DiCorato M, Dini P, Giammarchi M, Inzani P, Leveraro F, Malvezzi S, Menasce D, Mezzadri M, Milazzo L, Moroni L, Pedrini D, Pontoglio C, Prelz F, Rovere M, Sala S, Davenport TF, Arena V, Boca G, Bonomi G, Gianini G, Liguori G, Merlo MM, Pantea D, Ratti SP, Riccardi C, Vitulo P, Hernandez H, Lopez AM, Luiggi E, Mendez H, Mendez L, Mirles A, Montiel E, Olaya D, Paris A, Quinones J, Rivera C, Xiong W, Zhang Y, Wilson JR, Cho K, Handler T, Mitchell R, Engh D, Hosack M, Johns WE, Nehring M, Sheldon PD, Stenson K, Vaandering EW, Webster M, Sheaff M. A high statistics measurement of the Lambda(+)(c) lifetime. Phys Rev Lett 2002; 88:161801. [PMID: 11955226 DOI: 10.1103/physrevlett.88.161801] [Citation(s) in RCA: 3] [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: 01/31/2002] [Indexed: 05/23/2023]
Abstract
A high statistics measurement of the Lambda(+)(c) lifetime from the Fermilab fixed-target FOCUS photoproduction experiment is presented. We describe the analysis technique with particular attention to the determination of the systematic uncertainty. The measured value of 204.6 +/- 3.4 (stat) +/- 2.5 (syst) fs from 8034 +/- 122 Lambda(+)(c)-->pK(-)pi(+) decays represents a significant improvement over the present world average.
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Affiliation(s)
- J M Link
- University of California, Davis, California 95616, USA
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26
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Link JM, Reyes M, Yager PM, Anjos JC, Bediaga I, Göbel C, Magnin J, Massafferri A, de Miranda JM, Pepe IM, dos Reis AC, Carrillo S, Casimiro E, Sánchez-Hernández A, Uribe C, Vázquez F, Cinquini L, Cumalat JP, O'Reilly B, Ramirez JE, Vaandering EW, Butler JN, Cheung HWK, Gaines I, Garbincius PH, Garren LA, Gottschalk E, Kasper PH, Kreymer AE, Kutschke R, Bianco S, Fabbri FL, Zallo A, Cawlfield C, Kim DY, Rahimi A, Wiss J, Gardner R, Kryemadhi A, Chung YS, Kang JS, Ko BR, Kwak JW, Lee KB, Park H, Alimonti G, Boschini M, D'Angelo P, DiCorato M, Dini P, Giammarchi M, Inzani P, Leveraro F, Malvezzi S, Menasce D, Mezzadri M, Milazzo L, Moroni L, Pedrini D, Pontoglio C, Prelz F, Rovere M, Sala S, Davenport TF, Agostino L, Arena V, Boca G, Bonomi G, Gianini G, Liguori G, Merlo MM, Pantea D, Ratti SP, Riccardi C, Segoni I, Vitulo P, Hernandez H, Lopez AM, Mendez H, Mendez L, Mirles A, Montiel E, Olaya D, Paris A, Quinones J, Rivera C, Xiong W, Zhang Y, Wilson JR, Cho K, Handler T, Mitchell R, Engh D, Hosack M, Johns WE, Nehring M, Sheldon PD, Stenson K, Webster M, Sheaff M. Search for CP violation in the decays D+--> K(S)pi+ and D+-->K(S)K+. Phys Rev Lett 2002; 88:041602. [PMID: 11801103 DOI: 10.1103/physrevlett.88.041602] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2001] [Indexed: 05/23/2023]
Abstract
A high-statistics sample of photoproduced charm from the FOCUS experiment has been used to search for direct CP violation in the decay rates for D+-->K(S)pi+ and D+-->K(S)K+. We have measured the following asymmetry parameters relative to D+-->K-pi+pi+: A(CP)(K(S)pi+) = (-1.6+/-1.5+/-0.9)%, A(CP)(K(S)K+) = (+6.9+/-6.0+/-1.5)%, and A(CP)(K(S)K+) = (+7.1+/-6.1+/-1.2)% relative to D+-->K(S)pi+. We have also measured the relative branching ratios and found Gamma(D+-->K(0)pi+)/Gamma(D+-->K-pi+pi+) = (30.60+/-0.46+/-0.32)%, Gamma(D+-->K(0)K+)/Gamma(D+-->K-pi+pi+) = (6.04+/-0.35+/-0.30)%, and Gamma(D+-->K(0)K+)/Gamma(D+-->K(0)pi+) = (19.96+/-1.19+/-0.96)%.
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Affiliation(s)
- J M Link
- University of California, Davis, California 95616, USA
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27
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Link JM, Reyes M, Yager PM, Anjos JC, Bediaga I, Göbel C, Magnin J, Massafferi A, de Miranda JM, Pepe IM, dos Reis AC, Simão FR, Carrillo S, Casimiro E, Sánchez-Hernández A, Uribe C, Vázquez F, Cinquini L, Cumalat JP, O'Reilly B, Ramirez JE, Vaandering EW, Butler JN, Cheung HW, Gaines I, Garbincius PH, Garren LA, Gottschalk E, Kasper PH, Kreymer AE, Kutschke R, Bianco S, Fabbri FL, Sarwar S, Zallo A, Cawlfield C, Kim DY, Rahimi A, Wiss J, Gardner R, Chung YS, Kang JS, Ko BR, Kwak JW, Lee KB, Park H, Alimonti G, Boschini M, Caccianiga B, D'Angelo P, DiCorato M, Dini P, Giammarchi M, Inzani P, Leveraro F, Malvezzi S, Menasce D, Mezzadri M, Milazzo L, Moroni L, Pedrini D, Pontoglio C, Prelz F, Rovere M, Sala A, Sala S, Davenport TF, Agostino L, Arena V, Boca G, Bonomi G, Gianini G, Liguori G, Merlo M, Pantea D, Ratti SP, Riccardi C, Segoni I, Viola L, Vitulo P, Hernandez H, Lopez AM, Mendez H, Mendez L, Mirles A, Montiel E, Olaya D, Paris A, Quinones J, Rivera C, Xiong W, Zhang Y, Wilson JR, Cho K, Handler T, Engh D, Hosack M, Johns WE, Nehring M, Sheldon PD, Stenson K, Webster M, Sheaff M. Measurement of the branching ratios of D(+) and D(+)(s) hadronic decays to four-body final states containing a K(S). Phys Rev Lett 2001; 87:162001. [PMID: 11690200 DOI: 10.1103/physrevlett.87.162001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2001] [Indexed: 05/23/2023]
Abstract
We have studied hadronic four-body decays of D(+) and D(+)(s) mesons with a K(S) in the final state using data recorded during the 1996-1997 fixed-target run of the Fermilab high energy photoproduction experiment FOCUS. We report a new branching ratio measurement of gamma(D(+)-->K(S)K-pi(+)pi(+))/gamma(D(+)-->K(S)pi(+)pi(+)pi(-)) = 0.0768+/-0.0041+/-0.0032. We make the first observation of three new decay modes with branching ratios gamma(D(+)-->K(S)K+pi(+)pi(-))/gamma(D(+)-->K(S)pi(+)pi(+)pi(-)) = 0.0562+/-0.0039+/-0.0040, gamma(D(+)-->K(S)K+K-pi(+))/gamma(D(+)-->K(S)pi(+)pi(+)pi(-)) = 0.0077+/-0.0015+/-0.0009, and gamma(D(+)(s)-->K(S)K+pi(+)pi(-))/gamma(D(+)(s)-->K(S)K-pi(+)pi(+)) = 0.586+/-0.052+/-0.043, where in each case the first error is statistical and the second error is systematic.
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Affiliation(s)
- J M Link
- University of California, Davis, California 95616, USA
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Abstract
The goal of this investigation was to determine if there were identifiable patterns in the volume and types of teleconsults provided by an established telemedicine program over an extended period of time. Data from over 3 years of providing telemedicine consults within a university-based telemedicine programs were analyzed to identify trends and points of significant change in service provision. Teleconsult volume over a 40-month period was best fit by a logarithmic transformation of the regression curve that is characteristic of slow but steady growth. Consults have been provided in 53 subspecialties, with an average of 12 different subspecialties each month. Number of subspecialties per month was best fit by a sixth-order polynomial. Teleconsult volume has varied on a monthly basis, but overall volume has increased over time. This program has maintained its initial goal of being a multispecialty provider. Analyzing telemedicine consult data over extended periods of time is especially useful for long-term program evaluation and development of a successful business plan.
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Affiliation(s)
- E A Krupinski
- Departments of Radiology and Pathology, Arizona Telemedicine Program, College of Medicine, University of Arizona, Tucson, Arizona, USA.
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29
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Link JM, Reyes M, Yager PM, Anjos JC, Bediaga I, Göbel C, Magnin J, Massafferi A, de Miranda JM, Pepe IM, dos Reis AC, Simão FR, Carrillo S, Casimiro E, Sánchez-Hernández A, Uribe C, Vazquez F, Cinquini L, Cumalat JP, O'Reilly B, Ramirez JE, Vaandering EW, Butler JN, Cheung HW, Gaines I, Garbincius PH, Garren LA, Gottschalk E, Kasper PH, Kreymer AE, Kutschke R, Bianco S, Fabbri FL, Sarwar S, Zallo A, Cawlfield C, Kim DY, Rahimi A, Wiss J, Gardner R, Chung YS, Kang JS, Ko BR, Kwak JW, Lee KB, Park H, Alimonti G, Boschini M, Caccianiga B, D'Angelo P, DiCorato M, Dini P, Giammarchi M, Inzani P, Leveraro F, Malvezzi S, Menasce D, Mezzadri M, Milazzo L, Moroni L, Pedrini D, Pontoglio C, Prelz F, Rovere M, Sala A, Sala S, Davenport TF, Agostino L, Arena V, Boca G, Bonomi G, Gianini G, Liguori G, Merlo M, Pantea D, Ratti SP, Riccardi C, Segoni I, Viola L, Vitulo P, Hernandez H, Lopez AM, Mendez H, Mendez L, Mirles A, Montiel E, Olaya D, Paris A, Quinones J, Rivera C, Xiong W, Zhang Y, Wilson JR, Cho K, Handler T, Engh D, Hosack M, Johns WE, Nehring MS, Sheldon PD, Stenson K, Webster MS, Sheaff M. Study of the decay D0 --> K+pi-. Phys Rev Lett 2001; 86:2955-2958. [PMID: 11290081 DOI: 10.1103/physrevlett.86.2955] [Citation(s) in RCA: 3] [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: 12/20/2000] [Indexed: 05/23/2023]
Abstract
Using a large sample of photoproduced charm mesons from the FOCUS experiment at Fermilab (FNAL-E831), we observe the decay D0-->K+pi- with a signal yield of 149+/-31 events compared to a similarly cut sample consisting of 36 760+/-195 D0-->K-pi+ events. We use the observed ratio of D0-->K+pi- to D0-->K-pi+ (0.404+/-0.085+/-0.025)% to obtain a relationship between the D0 mixing and doubly Cabibbo suppressed decay parameters.
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Affiliation(s)
- J M Link
- University of California, Davis 95616, USA
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Shapiro SL, Lopez AM, Schwartz GE, Bootzin R, Figueredo AJ, Braden CJ, Kurker SF. Quality of life and breast cancer: relationship to psychosocial variables. J Clin Psychol 2001; 57:501-19. [PMID: 11255204 DOI: 10.1002/jclp.1026] [Citation(s) in RCA: 167] [Impact Index Per Article: 7.3] [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: 11/08/2022]
Abstract
The aim of this article is to shed more light on the relationship between quality of life and aspects of the psychosocial experience for women with breast cancer. The literature is briefly reviewed, including highlights of the psychosocial consequences of cancer, an exploration of the relationship of psychosocial variables to cancer, and a brief review of psychosocial interventions for cancer. Further, preliminary findings of an on-going NCI study are introduced. Finally, clinical implications are discussed. The purpose of this article is to provide a context and foundation on which future researchers and clinicians can build. Ultimately, we suggest that the biomedical model of disease, though crucial, does not take into account all of the complex factors involved in cancer. The current literature lends support to the argument that a broader, more integrative framework, which includes psychosocial factors, is needed.
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Affiliation(s)
- S L Shapiro
- Department of Psychology University of Arizona, Tucson, 85721-0068, USA.
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Lopez AM, Ketchum M, Nichols H, Xu MJ, Peng YM, Dorr R, Alberts DS. A phase I trial of AUC-directed carboplatin with infusional doxorubicin and ifosfamide plus G-CSF in patients with advanced gynecologic malignancies. Cancer Chemother Pharmacol 2001; 46:411-5. [PMID: 11127946 DOI: 10.1007/s002800000154] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 10/28/2022]
Abstract
The effect of the addition of G-CSF to carboplatin, ifosfamide and doxorubicin (CIA) at the maximally tolerated dose (MTD) was studied in a phase I clinical trial. Nine patients with incurable solid tumors were treated: six endometrial and epithelial ovarian cancers, one colon cancer with pelvic masses and two unknown primary cancers. The carboplatin dose was calculated using the Calvert formula and administered in a standard 30-min intravenous infusion. The initial carboplatin dose was AUC 4.0 mg/ml per min. Fixed doses of ifosfamide (1.25 g/m2 per day), mesna (1.0 g/m2 per day, and doxorubicin (15 mg/m2 per day) were combined and given as a 4-day continuous intravenous infusion in an attempt to decrease nonhematologic toxicity. The dose-limiting toxicity of CIA was myelosuppression, mainly neutropenia and thrombocytopenia. Nonhematologic toxicities were hemorrhagic cystitis, weakness, fatigue, and nausea and vomiting. The MTD for CIA was established at the first dose level of carboplatin (4.0 mg/ml per min). Following this, G-CSF was added to the regimen in an unsuccessful effort to escalate the carboplatin dose. Free and total carboplatin pharmacokinetics were determined using flameless atomic absorption spectroscopy. There was one complete response and one partial response among eight evaluable patients. Both responding patients had advanced ovarian cancer. We conclude that carboplatin dose intensification beyond an AUC of 4.0 mg/ml per min is not made feasible by the addition of G-CSF to infusional doxorubicin and ifosfamide in patients with advanced gynecologic cancer.
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Affiliation(s)
- A M Lopez
- Department of Medicine, College of Medicine, University of Arizona, Tucson 85724, USA
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Abstract
OBJECTIVE The goal of this project was to assess case turn-around times for store-and-forward and real-time video consultations in the Arizona Telemedicine Program. MATERIALS AND METHODS Five components contributing to total case turn-around time were analyzed. Each parameter was submitted to statistical analysis and compared for store-and-forward and real-time sessions. RESULTS Turn-around for real-time are longer than for store-and-forward sessions. Real-time sessions take longer, from when the consulting clinician is contacted to the time the case is reviewed. This is compounded by the fact that real-time sessions sometimes need to be rescheduled. For both types of consults, the time to deliver the final report is the longest segment of the total turn-around time. CONCLUSION Several factors contribute to case turn-around times. By identifying and analyzing each contributing factor, it is possible to revise consult protocols to improve efficiency.
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Affiliation(s)
- E Krupinski
- Arizona Telemedicine Program, University of Arizona and Department of Radiology, University of Arizona College of Medicine, Tucson, Arizona, USA
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Krupinski EA, LeSueur B, Ellsworth L, Levine N, Hansen R, Silvis N, Sarantopoulos P, Hite P, Wurzel J, Weinstein RS, Lopez AM. Diagnostic accuracy and image quality using a digital camera for teledermatology. Telemed J 2000; 5:257-63. [PMID: 10908439 DOI: 10.1089/107830299312005] [Citation(s) in RCA: 105] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE The study was designed to evaluate the effectiveness of digital photography for dermatologic diagnoses and compare it with in-person diagnoses. MATERIALS AND METHODS Patients referred for specialty consultations (n = 308) were recruited from a university dermatology clinic. Patients were examined in-person by one of three board-certified dermatologists who provided clinical diagnoses. Digital photos were obtained on all patients and were evaluated as computer images by a panel of dermatologists. RESULTS There was 83% concordance between in-person versus digital photo diagnoses. Intradermatologist concordance averaged 84%, and interdermatologist concordance averaged 81%. Decision confidence was rated as "very definite" to "definite" 62% of the time. Concordance with biopsy results was achieved in 76% of the cases. Image sharpness and color quality were rated "good" to "excellent" 83% and 93% of the time, respectively. CONCLUSION Digital photography for store-and-forward teledermatology produces high-quality images and diagnostic concordance rates that compare favorably with in-person clinical diagnoses.
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Affiliation(s)
- E A Krupinski
- Telemedicine Program, University of Arizona, University of Arizona College of Medicine, Tucson, AZ, USA
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Abstract
We present an approach for evaluating the efficacy of combination antitumor agent schedules that accounts for order and timing of drug administration. Our model-based approach compares in vivo tumor volume data over a time course and offers a quantitative definition for additivity of drug effects, relative to which synergism and antagonism are interpreted. We begin by fitting data from individual mice receiving at most one drug to a differential equation tumor growth/drug effect model and combine individual parameter estimates to obtain population statistics. Using two null hypotheses: (i) combination therapy is consistent with additivity or (ii) combination therapy is equivalent to treating with the more effective single agent alone, we compute predicted tumor growth trajectories and their distribution for combination treated animals. We illustrate this approach by comparing entire observed and expected tumor volume trajectories for a data set in which HER-2/neu-overexpressing MCF-7 human breast cancer xenografts are treated with a humanized, anti-HER-2 monoclonal antibody (rhuMAb HER-2), doxorubicin, or one of five proposed combination therapy schedules.
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Affiliation(s)
- A M Lopez
- Department of Biomathematics, School of Medicine, University of California, Los Angeles, CA 90095-1766, USA.
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Lopez AM, Wallace L, Dorr RT, Koff M, Hersh EM, Alberts DS. Topical DMSO treatment for pegylated liposomal doxorubicin-induced palmar-plantar erythrodysesthesia. Cancer Chemother Pharmacol 1999; 44:303-6. [PMID: 10447577 DOI: 10.1007/s002800050981] [Citation(s) in RCA: 88] [Impact Index Per Article: 3.5] [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: 10/28/2022]
Abstract
PURPOSE Chemotherapeutic regimens that utilize fluorouracil, cytarabine, and doxorubicin have been shown to cause a dermatologic syndrome known as hand-foot syndrome, or palmar-plantar erythrodysesthesia syndrome (PPES). Pegylated liposomal doxorubicin has proven effective in the treatment of AIDS-related Kaposi's sarcoma, ovarian cancer refractory to platinum and paclitaxel therapies, and metastatic breast cancer. In a study of the treatment of refractory epithelial cell ovarian cancers with lipozomal doxorubicin utilizing intravenous doses of 50 mg/m(2) every 3 weeks, grade 3 PPES was observed in 29% of patients (10/35) and required dose reductions and/or dose delay after a median of three therapy cycles. METHODS Current methods to prevent pegylated liposomal doxorubicin-induced PPES include dose reduction, lengthening of the drug administration interval and ultimately, drug withdrawal. Topical 99% dimethylsulfoxide (DMSO) also has shown strong activity in treating tissue extravasation reactions during intravenous administration of doxorubicin. RESULTS Two patients undergoing chemotherapy with pegylated liposomal doxorubicin, 50 mg/m(2) every 4 weeks, developed grade 3 PPE after three cycles. Their PPES resolved over a period of 1 to 3 weeks while receiving topical 99% DMSO four times daily for 14 days. CONCLUSIONS While these results are promising, patients must be treated in a prospective study of this topical DMSO formulation to definitively document its therapeutic efficacy.
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Affiliation(s)
- A M Lopez
- Department of Medicine, College of Medicine, University of Arizona, Tucson, AZ 85724, USA
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Silván AM, Gordillo MJ, Lopez AM, Cuevas GP, Gutiérrez JA, Iriondo JM, Cantón JA, Caro AM, Quesada ML, Arceaga MA, Vallés MC. Organ-preserving management of rhabdomyosarcoma of the prostate and bladder in children. Med Pediatr Oncol 1997; 29:573-5. [PMID: 9324347 DOI: 10.1002/(sici)1096-911x(199712)29:6<573::aid-mpo10>3.0.co;2-7] [Citation(s) in RCA: 23] [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] [Indexed: 02/05/2023]
Abstract
Between November 1978 and July 1991, ten children between one and eight years of age with Group III pelvic rhabdomyosarcoma (IRS classification) and considered inoperable at diagnosis were treated primarily with intensive poly-chemotherapy. Complementary radiotherapy and conservative surgery were added as needed. Eight of the ten survive free of disease with functioning bladders for periods ranging from 5.7-18.4 years.
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Affiliation(s)
- A M Silván
- Department of Oncology, Hospital Uniersitario Infantil Virgen del Rocio de Sevilla, Spain
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Abstract
Two patients with acute pulmonary coccidioidomycosis presenting as acute bacterial pneumonia and sepsis are described. One patient died despite appropriate antifungal therapy, whereas the diagnosis in the other patient was only established after postmortem examination. In both cases, coccidioidomycosis had disseminated beyond the lungs. Factors leading to overwhelming coccidioidomycosis are discussed, and the relation of the sepsis syndrome to coccidioidomycosis is reviewed.
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Affiliation(s)
- A M Lopez
- Department of Medicine, Arizona Health Sciences Center, Tucson
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Lopez AM. Clinical pharmacy as perceived by a foreign physician. DICP 1990; 24:208. [PMID: 2309518 DOI: 10.1177/106002809002400221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Lopez AM, Keirns S, Wang H, Goldberg RN. A reliable and cost-effective neonatal aminoglycoside administration system. Neonatal Netw 1989; 7:7-10. [PMID: 2492632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Lopez AM, Wolfsdorf J, Raszynski A, Contijoch-Serrano V. Estimation of nitrogen balance based on a six-hour urine collection in infants. JPEN J Parenter Enteral Nutr 1986; 10:517-8. [PMID: 3761525 DOI: 10.1177/0148607186010005517] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The accuracy of a 6-hr vs a 24-hr urine collection for the determination of urinary urea nitrogen was studied in 15 infants. Patient's age ranged from 2 weeks to 3 yr, encompassing a wide variety of diagnoses. All patients had normal renal function at the time of the study. Participants had indwelling foley catheters throughout the study. Urine specimens were collected over a continuous 24-hr period. Aliquots obtained from urine collected over 0 to 6 hr and the total urine collection were analyzed utilizing the urease enzymatic method in the Astra. Statistical analysis was performed comparing the actual 24-hr determination to the estimation based on the 6-hr collection, utilizing linear regression. The analysis of data produced a highly significant correlation (r = 0.904, p less than 0.0001). When a 24-hr urine collection is not possible, a 6-hr collection is a useful alternative for the calculation of nitrogen balance in infants.
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McKay DG, Latour JG, Lopez AM. Production of the generalized Shwartzmann reaction by activated Hageman factor and alpha-adrenergic stimulation. Thromb Diath Haemorrh 1971; 26:71-6. [PMID: 4398779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/16/2023]
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