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  • 1
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    Galaxies, Vol. 6, Pages 127: The Extraordinary Linear Polarisation Structure of the Southern Centaurus A Lobe Revealed by ASKAP (2018)
    MDPI
    In: Galaxies
    Details
    Publication Date: 2018
    Description: We present observations of linear polarisation in the southern radio lobe of Centaurus A, conducted during commissioning of the Australian Square Kilometre Array Pathfinder (ASKAP) telescope. We used 16 antennas to observe a 30 square degree region in a single 12-h pointing over a 240 MHz band centred on 913 MHz. Our observations achieve an angular resolution of 26 × 33 arcseconds (480 parsecs), a maximum recoverable angular scale of 30 arcminutes, and a full-band sensitivity of 85 μ Jy beam − 1 . The resulting maps of polarisation and Faraday rotation are amongst the most detailed ever made for radio lobes, with order 10 5 resolution elements covering the source. We describe several as-yet unreported observational features of the lobe, including its detailed peak Faraday depth structure, and intricate networks of depolarised filaments. These results demonstrate the exciting capabilities of ASKAP for widefield radio polarimetry.
    Electronic ISSN: 2075-4434
    Topics: Physics
    Published by MDPI
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  • 2
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    Subregional differences in groundfish distributional responses to anomalous ocean bottom temperatures in the northeast Pacific (2019)
    Wiley
    Details
    Publication Date: 2019
    Description: Accounting for ontogenetic shifts and subregional differences in groundfish distributional responses to warm temperatures, we examined large, quality‐controlled datasets of depth‐stratified, random bottom trawl surveys conducted during summer in three large regions—the Gulf of Alaska and the west coasts of Canada and the US—over the period 1996–2015. Abundant commercial groundfish demonstrated poleward responses to warming temperatures only in a few subregions and moved shallower or deeper to seek colder waters depending on the subregion. They may form geographically distinct thermal ecoregions, instead of continuously moving northward along the northeast Pacific shelf under global warming. Abstract Although climate‐induced shifts in fish distribution have been widely reported at the population level, studies that account for ontogenetic shifts and subregional differences when assessing responses are rare.In this study, groundfish distributional changes in depth, latitude, and longitude were assessed at different size classes by species within nine subregions. We examined large, quality‐controlled datasets of depth‐stratified‐random bottom trawl surveys conducted during summer in three large regions—the Gulf of Alaska and the west coasts of Canada and the United States—over the period 1996–2015, a time period punctuated by a marine “heat wave.” Temporal biases in bottom temperature were minimized by subdividing each region into three subregions, each with short‐duration surveys. Near‐bottom temperatures, weighted by stratum area, were unsynchronized across subregions and exhibited varying subregional interannual variability. The weighted mean bottom depths in the subregions also vary largely among subregions. The centroids (centers of gravity) of groundfish distribution were weighted with catch per unit effort and stratum area for 10 commercially important groundfish species by size class and subregion. Our multivariate analyses showed that there were significant differences in aggregate fish movement responses to warm temperatures across subregions but not among species or sizes. Groundfish demonstrated poleward responses to warming temperatures only in a few subregions and moved shallower or deeper to seek colder waters. The temperature responses of groundfish depended on where they were. Under global warming, groundfish may form geographically distinct thermal ecoregions along the northeast Pacific shelf. Shallow‐depth species exhibited greatly different distributional responses to temperature changes across subregions while deep‐depth species of different subregions tend to have relatively similar temperature responses. Future climate studies would benefit by considering fish distributions on small subregional scales.
    Print ISSN: 1354-1013
    Electronic ISSN: 1365-2486
    Topics: Biology , Energy, Environment Protection, Nuclear Power Engineering , Geography
    Published by Wiley
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  • 3
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    Feasibility of Implementing an Early Intervention Program in an Urban Low-Income Setting to Improve Neurodevelopmental Outcome in Survivors Following Birth Asphyxia (2011)
    Institut Veolia Environnement
    Details
    Publication Date: 2011-08-19
    Description: Birth asphyxia is a leading cause of neonatal mortality, accounting for 23% of neonatal deaths. An early intervention program (EIP) could improve neuro-developmental outcomes in survivors of birth asphyxia, but its feasibility in low-income countries has not been tested.  In this pilot study in Zambia, eighty live-born infants > 1500 g of weight who had birth asphyxia and received resuscitation with bag and mask were enrolled for a study of standard care or EIP. Mothers/babies pairs were randomized into control (standard care) and intervention (EIP) groups and were followed up at home on a bi-weekly basis from 8 weeks to 8 months of age. Forty two mothers/babies (52.5%) completed the study at 8 months. Reasons for not completing the study were: 19 (50.1%) were lost to follow up, 16 (42.1%) withdrew, and 3 (7.8%) died. Follow-up to 8 months of age was not feasible for the majority in a large urban city with a low income population. Thus, interventions for children who have suffered birth asphyxia that require additional health care visits may not be currently feasible in the setting tested. There is a need to conduct further EIP studies to determine ways to improve follow up rates of children surviving birth asphyxia. Integrating early intervention programs with other successful health programs, such as the existing immunization programs, may improve follow up rates.
    Electronic ISSN: 1867-8521
    Topics: Biology
    Published by Institut Veolia Environnement
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  • 4
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    Recovery and management options for spring/summer chinook salmon in the Columbia River basin (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-11-04
    Description: Construction of four dams on the lower Snake River (in northwestern United States) between 1961 and 1975 altered salmon spawning habitat, elevated smolt and adult migration mortality, and contributed to severe declines of Snake River salmon populations. By applying a matrix model to long-term population data, we found that (i) dam passage improvements have dramatically mitigated direct mortality associated with dams; (ii) even if main stem survival were elevated to 100%, Snake River spring/summer chinook salmon (Oncorhynchus tshawytscha) would probably continue to decline toward extinction; and (iii) modest reductions in first-year mortality or estuarine mortality would reverse current population declines.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kareiva, P -- Marvier, M -- McClure, M -- New York, N.Y. -- Science. 2000 Nov 3;290(5493):977-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉National Marine Fisheries Service, Northwest Fisheries Science Center, 2725 Montlake Boulevard East, Seattle, WA 98112, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11062128" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Conservation of Natural Resources ; *Ecosystem ; Female ; Fresh Water ; Male ; Models, Biological ; Models, Statistical ; Northwestern United States ; Population Dynamics ; *Salmon/growth & development/physiology ; Survival Rate
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 5
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    Control of a mucosal challenge and prevention of AIDS by a multiprotein DNA/MVA vaccine (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-06-08
    Description: Heterologous prime/boost regimens have the potential for raising high levels of immune responses. Here we report that DNA priming followed by a recombinant modified vaccinia Ankara (rMVA) booster controlled a highly pathogenic immunodeficiency virus challenge in a rhesus macaque model. Both the DNA and rMVA components of the vaccine expressed multiple immunodeficiency virus proteins. Two DNA inoculations at 0 and 8 weeks and a single rMVA booster at 24 weeks effectively controlled an intrarectal challenge administered 7 months after the booster. These findings provide hope that a relatively simple multiprotein DNA/MVA vaccine can help to control the acquired immune deficiency syndrome epidemic.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Amara, R R -- Villinger, F -- Altman, J D -- Lydy, S L -- O'Neil, S P -- Staprans, S I -- Montefiori, D C -- Xu, Y -- Herndon, J G -- Wyatt, L S -- Candido, M A -- Kozyr, N L -- Earl, P L -- Smith, J M -- Ma, H L -- Grimm, B D -- Hulsey, M L -- Miller, J -- McClure, H M -- McNicholl, J M -- Moss, B -- Robinson, H L -- P01 AI 43045/AI/NIAID NIH HHS/ -- P30 DA 12121/DA/NIDA NIH HHS/ -- P51 RR000165/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 2001 Apr 6;292(5514):69-74.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Vaccine Research Center and Yerkes Regional Primate Research Center, Emory University, Atlanta, GA 30329, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11393868" target="_blank"〉PubMed〈/a〉
    Keywords: AIDS Vaccines/administration & dosage/*immunology ; Acquired Immunodeficiency Syndrome/immunology/*prevention & control/virology ; Animals ; Antibodies, Viral/blood/immunology ; CD4-Positive T-Lymphocytes/immunology ; CD8-Positive T-Lymphocytes/immunology ; Germinal Center/immunology ; HIV Antibodies/blood/immunology ; HIV-1/genetics/immunology/physiology ; Immunity, Mucosal ; Immunization, Secondary ; Immunologic Memory ; Interferon-gamma/biosynthesis ; Lymph Nodes/immunology ; Macaca mulatta ; SAIDS Vaccines/administration & dosage/immunology ; Simian Acquired Immunodeficiency Syndrome/immunology/prevention & ; control/virology ; Simian Immunodeficiency Virus/genetics/immunology/physiology ; T-Lymphocytes/immunology ; Vaccines, DNA/administration & dosage/*immunology ; Vaccines, Synthetic/administration & dosage/immunology ; Vaccinia virus/immunology ; Viral Load
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 6
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    Many plans, one bottom line: save endangered salmon (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-10-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kareiva, P -- Levin, P S -- McClure, M M -- New York, N.Y. -- Science. 2000 Sep 29;289(5488):2281-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11041793" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Conservation of Natural Resources ; *Ecosystem ; Fresh Water ; Northwestern United States ; *Salmon
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
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    Uranium stabilization of c28: a tetravalent fullerene (1992)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1992-09-18
    Description: Laser vaporization experiments with graphite in a supersonic cluster beam apparatus indicate that the smallest fullerene to form in substantial abundance is C(28). Although ab initio quantum chemical calculations predict that this cluster will favor a tetrahedral cage structure, it is electronically open shell. Further calculations reveal that C(28) in this structure should behave as a sort of hollow superatom with an effective valence of 4. This tetravalence should be exhibited toward chemical bonding both on the outside and on the inside of the cage. Thus, stable closed-shell derivatives of C(28) with large highest occupied molecular orbital-lowest unoccupied molecular orbital gaps should be attainable either by reacting at the four tetrahedral vertices on the outside of the C(28) cage to make, for example, C(28)H(4), or by trapping a tetravalent atom inside the cage to make endothedral fullerenes such as Ti@C(28). An example of this second, inside route to C(28) stabilization is reported here: the laser and carbon-arc production of U@C(28).〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Guo, T -- Diener, M D -- Chai, Y -- Alford, M J -- Haufler, R E -- McClure, S M -- Ohno, T -- Weaver, J H -- Scuseria, G E -- Smalley, R E -- New York, N.Y. -- Science. 1992 Sep 18;257(5077):1661-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17841162" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 8
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    BOLD responses reflecting dopaminergic signals in the human ventral tegmental area (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2008-03-01
    Description: Current theories hypothesize that dopamine neuronal firing encodes reward prediction errors. Although studies in nonhuman species provide direct support for this theory, functional magnetic resonance imaging (fMRI) studies in humans have focused on brain areas targeted by dopamine neurons [ventral striatum (VStr)] rather than on brainstem dopaminergic nuclei [ventral tegmental area (VTA) and substantia nigra]. We used fMRI tailored to directly image the brainstem. When primary rewards were used in an experiment, the VTA blood oxygen level-dependent (BOLD) response reflected a positive reward prediction error, whereas the VStr encoded positive and negative reward prediction errors. When monetary gains and losses were used, VTA BOLD responses reflected positive reward prediction errors modulated by the probability of winning. We detected no significant VTA BOLD response to nonrewarding events.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉D'Ardenne, Kimberlee -- McClure, Samuel M -- Nystrom, Leigh E -- Cohen, Jonathan D -- F32 MH072141/MH/NIMH NIH HHS/ -- P50 MH062196/MH/NIMH NIH HHS/ -- T32 MH065214/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 2008 Feb 29;319(5867):1264-7. doi: 10.1126/science.1150605.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry, Princeton University, Princeton, NJ 08544, USA. dardenne@princeton.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18309087" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Adult ; Basal Ganglia/physiology ; Conditioning, Classical ; Cues ; Dopamine/*physiology ; Female ; Humans ; Magnetic Resonance Imaging ; Male ; Mental Processes/*physiology ; Oxygen/blood ; Probability ; Reinforcement (Psychology) ; *Reward ; Ventral Tegmental Area/*physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
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    Unsung hero Robert C. Gallo (2009)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2009-01-10
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Abbadessa, Giovanni -- Accolla, Roberto -- Aiuti, Fernando -- Albini, Adriana -- Aldovini, Anna -- Alfano, Massimo -- Antonelli, Guido -- Bartholomew, Courtenay -- Bentwich, Zvi -- Bertazzoni, Umberto -- Berzofsky, Jay A -- Biberfeld, Peter -- Boeri, Enzo -- Buonaguro, Luigi -- Buonaguro, Franco M -- Bukrinsky, Michael -- Burny, Arsene -- Caruso, Arnaldo -- Cassol, Sharon -- Chandra, Prakash -- Ceccherini-Nelli, Luca -- Chieco-Bianchi, Luigi -- Clerici, Mario -- Colombini-Hatch, Sandra -- de Giuli Morghen, Carlo -- de Maria, Andrea -- de Rossi, Anita -- Dierich, Manfred -- Della-Favera, Riccardo -- Dolei, Antonina -- Douek, Daniel -- Erfle, Volker -- Felber, Barbara -- Fiorentini, Simona -- Franchini, Genoveffa -- Gershoni, Jonathan M -- Gotch, Frances -- Green, Patrick -- Greene, Warner C -- Hall, William -- Haseltine, William -- Jacobson, Stephens -- Kallings, Lars O -- Kalyanaraman, Vaniambadi S -- Katinger, Hermann -- Khalili, Kamel -- Klein, George -- Klein, Eva -- Klotman, Mary -- Klotman, Paul -- Kotler, Moshe -- Kurth, Reinhard -- Lafeuillade, Alain -- La Placa, Michelangelo -- Lewis, Jonathan -- Lillo, Flavia -- Lisziewicz, Julianna -- Lomonico, Anita -- Lopalco, Lucia -- Lori, Franco -- Lusso, Paolo -- Macchi, Beatrice -- Malim, Michael -- Margolis, Leonid -- Markham, Phillip D -- McClure, Myra -- Miller, Nancy -- Mingari, Maria C -- Moretta, Lorenzo -- Noonan, Douglas -- O'Brien, Steve -- Okamoto, Takashi -- Pal, Ranajit -- Palese, Peter -- Panet, Amos -- Pantaleo, Giuseppe -- Pavlakis, George -- Pistello, Mauro -- Plotkin, Stanley -- Poli, Guido -- Pomerantz, Roger -- Radaelli, Antonia -- Robertguroff, Marjorie -- Roederer, Mario -- Sarngadharan, Mangalasseril G -- Schols, Dominique -- Secchiero, Paola -- Shearer, Gene -- Siccardi, Antonio -- Stevenson, Mario -- Svoboda, Jan -- Tartaglia, Jim -- Torelli, Giuseppe -- Tornesello, Maria Lina -- Tschachler, Erwin -- Vaccarezza, Mauro -- Vallbracht, Angelika -- van Lunzen, Jan -- Varnier, Oliviero -- Vicenzi, Elisa -- von Melchner, Harald -- Witz, Isaac -- Zagury, Daniel -- Zagury, Jean-Francois -- Zauli, Giorgio -- Zipeto, Donato -- New York, N.Y. -- Science. 2009 Jan 9;323(5911):206-7. doi: 10.1126/science.323.5911.206.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19131607" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/diagnosis/*history/virology ; *HIV-1/growth & development/isolation & purification ; History, 20th Century ; History, 21st Century ; Humans ; *Nobel Prize ; United States
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 10
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    SIVcpz in wild chimpanzees (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-01-19
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Santiago, Mario L -- Rodenburg, Cynthia M -- Kamenya, Shadrack -- Bibollet-Ruche, Frederic -- Gao, Feng -- Bailes, Elizabeth -- Meleth, Sreelatha -- Soong, Seng-Jaw -- Kilby, J Michael -- Moldoveanu, Zina -- Fahey, Babette -- Muller, Martin N -- Ayouba, Ahidjo -- Nerrienet, Eric -- McClure, Harold M -- Heeney, Jonathan L -- Pusey, Anne E -- Collins, D Anthony -- Boesch, Christophe -- Wrangham, Richard W -- Goodall, Jane -- Sharp, Paul M -- Shaw, George M -- Hahn, Beatrice H -- New York, N.Y. -- Science. 2002 Jan 18;295(5554):465.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉University of Alabama at Birmingham, Birmingham, AL 35294-6024, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11799233" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Wild/*virology ; Antibodies, Viral/analysis/urine ; Ape Diseases/*epidemiology ; Cote d'Ivoire/epidemiology ; Feces/virology ; HIV-1/genetics ; Immunoblotting ; Male ; Pan troglodytes/immunology/*virology ; Polymerase Chain Reaction ; Prevalence ; RNA, Viral/analysis ; Simian Acquired Immunodeficiency Syndrome/*epidemiology ; Simian Immunodeficiency Virus/genetics/immunology/*isolation & purification ; Tanzania/epidemiology ; Uganda/epidemiology ; Urine/virology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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