125 research outputs found
A Search for H2O Megamasers in High-z Type-2 AGNs
We report a search for H2O megamasers in 274 SDSS type-2 AGNs (0.3 < z <
0.83), half of which can be classified as type-2 QSOs from their [OIII] 5007
luminosity, using the Robert C. Byrd Green Bank Telescope (GBT) and the
Effelsberg 100-m radio telescope. Apart from the detection of the extremely
luminous water vapor megamaser SDSS J080430.99+360718.1, already reported by
Barvainis & Antonucci (2005), we do not find any additional line emission. This
high rate of non-detections is compared to the water maser luminosity function
created from the 78 water maser galaxies known to date and its extrapolation
towards the higher luminosities of "gigamasers" that we would have been able to
detect given the sensitivity of our survey. The properties of the known water
masers are summarized and discussed with respect to the nature of high-z type-2
AGNs and megamasers in general. In the appendix, we list 173 additional objects
(mainly radio galaxies, but also QSOs and galaxies) that were observed with the
GBT, the Effelsberg 100-m radio telescope, or Arecibo Observatory without
leading to the detection of water maser emission.Comment: 28 pages, 3 figures. Accepted for publication in the Astrophysical
Journa
Draft genome sequences of four citrobacter isolates recovered from wild australian shorebirds
Citrobacter is a ubiquitous bacterial genus whose members inhabit a variety of niches. Some species are clinically important for both antimicrobial resistance (AMR) carriage and as the cause of nosocomial infections. Surveillance of Citrobacter species in the environment can provide indicators of the spread of AMR genes outside clinical spaces. In this study, we present draft genome sequences of four Citrobacter isolates obtained from three species of wild Australian shorebirds. Copyright © 2021 Smith et al. This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International license
Compassion, Dominance/Submission, and Curled Lips: A Thematic Analysis of Dacryphilic Experience
Paraphilias are often discussed in the psychological literature as pathological problems, yet relatively little research exists that looks into non-pathological paraphilias (i.e., non-normative sexual interests). Empirical evidence suggests that many individuals incorporate a range of non-normative sexual interests into their sexual lifestyles. Dacryphilia is a non-normative sexual interest that involves enjoyment or arousal from tears and crying, and to date has never been researched empirically. The present study set out to discover the different interests within dacryphilia and explore the range of dacryphilic experience. A set of online interviews was carried out with individuals with dacryphilic preferences and interests (six females and two males) from four countries. The data were analysed for semantic and latent themes using thematic analysis. The respondents' statements focused attention on three distinct areas that may be relevant to the experience of dacryphilia: (i) compassion; (ii) dominance/submission; and (iii) curled-lips. The data provided detailed descriptions of features within all three interests, which are discussed in relation to previous quantitative and qualitative research within emotional crying and tears, and the general area of non-normative sexual interests. The study suggests new directions for potential research both within dacryphilia and with regard to other non-normative sexual interests
A Binary Millisecond Pulsar in Globular Cluster NGC6544
We report the detection of a new 3.06 ms binary pulsar in the globular
cluster NGC6544 using a Fourier-domain ``acceleration'' search. With an implied
companion mass of ~0.01 solar masses and an orbital period of only P_b~1.7
hours, it displays very similar orbital properties to many pulsars which are
eclipsed by their companion winds. The orbital period is the second shortest of
known binary pulsars after 47 Tuc R. The measured flux density of 1.3 +/- 0.4
mJy at 1332 MHz indicates that the pulsar is almost certainly the known
steep-spectrum point source near the core of NGC6544.Comment: Accepted by ApJ Letters on 11 October 2000, 5 page
Abolishing spontaneous epileptiform activity in human brain tissue through AMPA receptor inhibition
Objective: The amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor (AMPAR) is increasingly recognized as a therapeutic target in drug-refractory pediatric epilepsy. Perampanel (PER) is a non-competitive AMPAR antagonist, and pre-clinical studies have shown the AMPAR-mediated anticonvulsant effects of decanoic acid (DEC), a major medium-chain fatty acid provided in the medium-chain triglyceride ketogenic diet. Methods: Using brain tissue resected from children with intractable epilepsy, we recorded the effects of PER and DEC in vitro. Results: We found resected pediatric epilepsy tissue exhibits spontaneous epileptic activity in vitro, and showed that DEC and PER inhibit this epileptiform activity in local field potential recordings as well as excitatory synaptic transmission. Interpretation: This study confirms AMPAR antagonists inhibit epileptiform discharges in brain tissue resected in a wide range of pediatric epilepsies
Contextual factors in premature non-communicable disease mortality in selected African countries within the sustainable development goals framework: the implication of voice and accountability
Sustainable Development Goal number 3, target 4 (SDG 3.4), seeks a 30% reduction in premature Non-Communicable Diseases (NCDs) mortality from 2015 levels by 2030. Africa United Nations (UN) Member States continue to experience increasing NCD mortality significantly, with the highest proportion of diabetes mortality among the working-age group. Past efforts to address this burden have been centered primarily on individual risk modifications evident by the NCDs Cluster Program at the World Health Organization (WHO) Africa Regional Office. To achieve a progressive reduction, a comprehensive premature NCD reduction approach which includes a consideration of contexts within which premature NCD, such diabetes mortality arises is necessary. The aim was to examine the relationship between contextual factors and diabetes-related deaths as premature NCD mortality and to enable an improved contextualized evidence-based approach to premature NCD mortality reduction. Country-level data was retrieved for post SDG initiative years (2016-2019) from multiple publicly available data sources for 32 selected Africa UN Member States in the International Diabetes Federation (IDF) East and West Africa Region. Multiple linear regression was employed to examine the relationship between diabetes-related deaths in individuals 20-79 years and contextual factors identified within the SDG framework. Weighted data analysis showed that voice and accountability as a contextual factor explained approximately 47% variability in diabetes-related deaths across the selected Africa UN Member Sates in IDF East and West Region (n=32). Civil society engagement is vital to develop effective premature NCD mortality reduction policies, and strategies and stakeholdersâ accountabilities are necessary to ensure adherence to obligations
Supplemental Income: British newspaper colour supplements in the 1960s
The introduction of colour supplements by three âqualityâ newspapers during the 1960s was a key development in the British press during the decade, and was described by the editor of the Sunday Times as âperhaps the most successful single innovation in post-war journalismâ. This article provides an overview of the advent of the colour supplements, explaining why they emerged when they did and developed in the manner they did, and exploring some of the difficulties and issues that attended their arrival. The article also demonstrates that sections of the British press were capable of taking advantage of changes in print and advertising culture brought about by the arrival of the post-war consumer society. However, the term âcolour supplementâ became pejorative shorthand for the perceived vacuity of this new society, in part because of the tension that existed between the editorial and advertising content of these modish new publications. Consequently, the success of the colour supplement experiment was not universally celebrated
Il museo relazionale. Riflessioni ed esperienze europee
I contributi raccolti nel volume affrontano piĂč aspetti della vita del museo, tutti perĂČ coinvolti dalle dimensioni della relazione: le filosofie e le tecniche di comunicazione culturale, i concetti di un appropriato marketing museale, le strategie di costruzione e di veicolazione dell'immagine, le logiche organizzative, i modelli educativi, l'utilizzo delle nuove tecnologie.- Indice #5- Una nuova edizione del Museo relazionale #9- Introduzione PerchĂ© il museo relazionale ?, Simona Bodo e Marco Demarie #11- Prefazione alla nuova edizione, Simona Bodo #25- Nuovi valori, nuove voci, nuove narrative: lâevoluzione dei modelli comunicativi nei musei dâarte, Eilean Hooper-Greenhill #29- Ripensare il museo dâarte come risorsa educativa: marketing e curatela rivisitati in risposta a pubblici complessi, Eric Moody #69- Costruzione e veicolazione dellâimmagine nei musei dâarte: verso nuovi concetti di marketing museale, Fiona McLean #89- LeggibilitĂ e accesso: le tecnologie dellâinformazione e della comunicazione al servizio del museo dâarte, Anne Fahy #109- Politiche del patrimonio e marketing museale in Germania. Prospettive dallâesperienza di Colonia, Andreas Johann Wiesand #129- Musei dâarte e politiche di sviluppo del turismo urbano nel caso francese, Jean Michel Tobelem #167- Per unâ âimmagine sostenibileâ. Modelli organizzativi, professionalitĂ , efficacia comunicativa nel caso dei musei di Glasgow, Julian Spalding #195- I musei e la lotta alla disuguaglianza sociale: ruoli, responsabilitĂ , resistenze, Richard Sandell #21
The Murchison Widefield Array
It is shown that the excellent Murchison Radio-astronomy Observatory site
allows the Murchison Widefield Array to employ a simple RFI blanking scheme and
still calibrate visibilities and form images in the FM radio band. The
techniques described are running autonomously in our calibration and imaging
software, which is currently being used to process an FM-band survey of the
entire southern sky.Comment: Accepted for publication in Proceedings of Science [PoS(RFI2010)016].
6 pages and 3 figures. Presented at RFI2010, the Third Workshop on RFI
Mitigation in Radio Astronomy, 29-31 March 2010, Groningen, The Netherland
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