12,017 research outputs found
Life in Data”—Outcome of a Multi-Disciplinary, Interactive Biobanking Conference Session on Sample Data
©Sara Y. Nussbeck et al. 2016; Published by Mary Ann Liebert, Inc. This Open Access article is distributed under the terms of the Creative Commons Attribution Noncommercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited. The article attached is the publisher's pdf
Facebook surveillance of former romantic partners: Associations with post-breakup recovery and personal growth
Copyright @ 2012 Mary Ann Liebert, Inc.This article has been made available through the Brunel Open Access Publishing Fund.Previous research has found that continuing offline contact with an ex-romantic partner following a breakup may disrupt emotional recovery. The present study examined whether continuing online contact with an ex-partner through remaining Facebook friends and/or engaging in surveillance of the ex-partner's Facebook page inhibited postbreakup adjustment and growth above and beyond offline contact. Analysis of the data provided by 464 participants revealed that Facebook surveillance was associated with greater current distress over the breakup, more negative feelings, sexual desire, and longing for the ex-partner, and lower personal growth. Participants who remained Facebook friends with the ex-partner, relative to those who did not remain Facebook friends, reported less negative feelings, sexual desire, and longing for the former partner, but lower personal growth. All of these results emerged after controlling for offline contact, personality traits, and characteristics of the former relationship and breakup that tend to predict postbreakup adjustment. Overall, these findings suggest that exposure to an ex-partner through Facebook may obstruct the process of healing and moving on from a past relationship
The open cluster initial-final mass relationship and the high-mass tail of the white dwarf distribution
Recent studies of white dwarfs in open clusters have provided new constraints
on the initial - final mass relationship (IFMR) for main sequence stars with
masses in the range 2.5 - 6.5 Mo. We re-evaluate the ensemble of data that
determines the IFMR and argue that the IFMR can be characterised by a mean
initial-final mass relationship about which there is an intrinsic scatter. We
investigate the consequences of the IFMR for the observed mass distribution of
field white dwarfs using population synthesis calculations. We show that while
a linear IFMR predicts a mass distribution that is in reasonable agreement with
the recent results from the PG survey, the data are better fitted by an IFMR
with some curvature. Our calculations indicate that a significant (~28%)
percentage of white dwarfs originating from single star evolution have masses
in excess of ~0.8 Mo, obviating the necessity for postulating the existence of
a dominant population of high-mass white dwarfs that arise from binary star
mergers.Comment: 5 pages, 2 color Postscript figures. Accepted for publication in
MNRA
Polistes dominula (Christ, 1791) (Hymenoptera: Vespidae: Polistinae) found in South Dakota, U.S.A.
Polistes dominula (Christ, 1791) (Hymenoptera: Vespidae: Polistinae), a Palearctic paper wasp established in North America, is reported for the first time from the state of South Dakota, U.S.A
Molecular profiling of multiplexed gene markers to assess viability of ex vivo human colon explant cultures
© Janice E. Drew et al. 2015; Published by Mary Ann Liebert, Inc. This Open Access article is distributed under the terms of the Creative Commons License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. Acknowledgments The authors would like to thank the patients who kindly donated tissue samples, Sally Chalmers of the Tayside Tissue Bank for her help with collecting of the tissue donor samples, Emma Moss for advice on human colon dissection and explant culture, and Claus Dieter Mayer, Biomathematics and Statistics Scotland, for advice on statistical analysis. This work was supported by the Scottish Government (GT403), Scottish Universities Life Science Alliance, and TENOVUS Scotland.Peer reviewedPublisher PD
\u3ci\u3ePolistes Dominula\u3c/i\u3e (Christ) (Hymenoptera: Vespidae: Polistinae) Recorded from Nebraska
Polistes dominula (Christ), a Palearctic paper wasp that has established in various areas of North America, is reported for the first time from the state of Nebraska based on specimens from the city of Lincoln. Potential implications of its presence in Nebraska are discussed
Further investigation of white dwarfs in the open clusters NGC2287 and NGC3532
We report the results of a CCD imaging survey, complimented by astrometric
and spectroscopic follow-up studies, that aims to probe the fate of
heavy-weight intermediate mass stars by unearthing new, faint, white dwarf
members of the rich, nearby, intermediate age open clusters NGC3532 and
NGC2287. We identify a total of four white dwarfs with distances, proper
motions and cooling times which can be reconciled with membership of these
populations. We find that WDJ0643-203 in NGC2287, with an estimated mass of
M=1.02-1.16Msun, is potentially the most massive white dwarf so far identified
within an open cluster. Guided by the predictions of modern theoretical models
of the late-stage evolution of heavy-weight intermediate mass stars, we
conclude that there is a distinct possibility it has a core composed of O and
Ne. We also determine that despite the cooling times of the three new white
dwarfs in NGC3532 and the previously known degenerate member NGC3532-10
spanning ~90Myr, they all have remarkably similar masses (M~0.9-1Msun). This is
fully consistent with the results from our prior work on a heterogeneous sample
of ~50 white dwarfs from 12 stellar populations, on the basis of which we
argued that the stellar initial mass-final mass relation is less steep at
Minit>4Msun than in the adjacent lower initial mass regime. This change in the
gradient of the relation could account for the secondary peak observed in the
mass distribution of the field white dwarf population and mitigate the need to
invoke close binary evolution to explain its existence. Spectroscopic
investigation of numerous additional candidate white dwarf members of NGC3532
unearthed by a recent independent study would be useful to confirm (or
otherwise) these conclusions.Comment: 8 Figures, 8 tables. Accepted for publication in MNRA
Albus 1: A very bright white dwarf candidate
We have serendipitously discovered a previously-unknown, bright source (B_T =
11.75+/-0.07 mag) with a very blue V_T-K_s color, to which we have named Albus
1. A photometric and astrometric study using Virtual Observatory tools has
shown that it possesses an appreciable proper motion and magnitudes and colors
very similar to those of the well known white dwarf G 191-B2B. We consider
Albus 1 as a DA-type white dwarf located at about 40 pc. If confirmed its
nature, Albus 1 would be the sixth brightest isolated white dwarf in the sky,
which would make it an excellent spectrophotometric standard.Comment: ApJ Letters, in pres
Post common envelope binaries from the SDSS VI. SDSS J120615.73+510047.0 : a new low accretion rate magnetic binary
We report the discovery of the ninth pre-polar consisting of a late-type ZAMS secondary and a magnetic white dwarf. The white dwarf accretes at an extreme low rate, \dot{M} \sim 10^ yr-1, from the wind of the companion donor star. The source was found in our systematic search for WD/MS binaries within SDSS/SEGUE. Based on seven Sloan spectra we estimate a binary period of ~200, 230, or 270 min. The UV to IR spectral energy distribution was decomposed into a dM3-dM4 ZAMS secondary and a cool white dwarf, ~9000 K, which consistently imply a distance between 360 and 420 pc. The optical spectrum displays one pronounced cyclotron hump, likely originating from a low-temperature plasma, ~1 keV, in a field of 108 MG. We comment on the evolutionary link between polars and pre-polars
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