5,092 research outputs found
Chart Smart: A Need for Documentation and Billing Education Among Emergency Medicine Residents?
Objective: The healthcare chart is becoming ever more complex, serving clinicians, patients, third party payers, regulators, and even medicolegal parties. The purpose of this study was to identify our emergency medicine (EM) resident and attending physicians’ current knowledge and attitudes about billing and documentation practices. We hypothesized that resident and attending physicians would identify billing and documentation as an area in which residents need further education.Methods: We gave a 15-question Likert survey to resident and attending physicians regarding charting practices, knowledge of billing and documentation, and opinions regarding need for further education.Results: We achieved a 100% response rate, with 47% (16/34) of resident physicians disagreeing or strongly disagreeing that they have adequate training in billing and documentation, while 91% (31/34) of residents and 95% (21/22) of attending physicians identified this skill as important to a resident’s future practice. Eighty-two percent (28/34) of resident physicians and 100% of attending physicians recommended further education for residents.Conclusion: Residents in this academic EM department identified a need for further education in billing and documentation practices. [West J Emerg Med. 2010;11(2): 116-119.
A Super-Earth Transiting a Naked-Eye Star
We have detected transits of the innermost planet "e" orbiting 55 Cnc
(V=6.0), based on two weeks of nearly continuous photometric monitoring with
the MOST space telescope. The transits occur with the period (0.74 d) and phase
that had been predicted by Dawson & Fabrycky, and with the expected duration
and depth for the crossing of a Sun-like star by a hot super-Earth. Assuming
the star's mass and radius to be 0.963_{-0.029}^{+0.051} M_sun and 0.943 +/-
0.010 R_sun, the planet's mass, radius, and mean density are 8.63 +/- 0.35
Mearth, 2.00 +/- 0.14 Rearth, and 5.9_{-1.1}^{+1.5} g/cm^3. The mean density is
comparable to that of Earth, despite the greater mass and consequently greater
compression of the interior of 55 Cnc e. This suggests a rock-iron composition
supplemented by a significant mass of water, gas, or other light elements.
Outside of transits, we detected a sinusoidal signal resembling the expected
signal due to the changing illuminated phase of the planet, but with a full
range (168 +/- 70 ppm) too large to be reflected light or thermal emission.
This signal has no straightforward interpretation and should be checked with
further observations. The host star of 55 Cnc e is brighter than that of any
other known transiting planet, which will facilitate future investigations.Comment: ApJ Letters, in press (v3) Minor changes/clarifications; (v2) Revised
after fixing an error in the data reduction pipeline; for details see
http://web.mit.edu/~jwinn/www/55cnc_response.tx
Ariel - Volume 12(13) Number 4
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Impact of handgrip exercise intensity on brachial artery flow-mediated dilation.
PURPOSE: Previous studies that have examined the impact of exercise intensity on conduit artery endothelial function have involved large muscle group exercise which induces local and systemic effects. The aim of this study was to examine flow-mediated dilation (FMD) before and after incremental intensities of handgrip exercise (HE), to assess the role of local factors such as blood flow and shear rate on post-exercise brachial artery function. METHODS: Eleven healthy men attended the laboratory on three occasions. Subjects undertook 30 min of handgrip exercise at three intensities (5, 10 or 15 % MVC). Brachial artery FMD, shear and blood flow patterns were examined before, immediately after and 60 min post exercise. RESULTS: Handgrip exercise increased mean and antegrade shear rate (SR) and blood flow (BF) and reduced retrograde SR and BF (all P < 0.01). Exercise intensity was associated with a dose-dependent increase in both mean and antegrade BF and SR (interaction, P < 0.01). Post-hoc tests revealed that, whilst handgrip exercise did not immediately induce post-exercise changes, FMD was significantly higher 60 min post-exercise following the highest exercise intensity (5.9 ± 2.8-10.4 ± 5.8 %, P = 0.01). CONCLUSIONS: Handgrip exercise leads to intensity-and time-dependent changes in conduit artery function, possibly mediated by local increases in shear, with improvement in function evident at 1 h post-exercise when performed at a higher intensity
TarO : a target optimisation system for structural biology
This work was funded by the UK Biotechnology and Biological Sciences Research Council (BBSRC) Structural Proteomics of Rational Targets (SPoRT) initiative, (Grant BBS/B/14434). Funding to pay the Open Access publication charges for this article was provided by BBSRC.TarO (http://www.compbio.dundee.ac.uk/taro) offers a single point of reference for key bioinformatics analyses relevant to selecting proteins or domains for study by structural biology techniques. The protein sequence is analysed by 17 algorithms and compared to 8 databases. TarO gathers putative homologues, including orthologues, and then obtains predictions of properties for these sequences including crystallisation propensity, protein disorder and post-translational modifications. Analyses are run on a high-performance computing cluster, the results integrated, stored in a database and accessed through a web-based user interface. Output is in tabulated format and in the form of an annotated multiple sequence alignment (MSA) that may be edited interactively in the program Jalview. TarO also simplifies the gathering of additional annotations via the Distributed Annotation System, both from the MSA in Jalview and through links to Dasty2. Routes to other information gateways are included, for example to relevant pages from UniProt, COG and the Conserved Domains Database. Open access to TarO is available from a guest account with private accounts for academic use available on request. Future development of TarO will include further analysis steps and integration with the Protein Information Management System (PIMS), a sister project in the BBSRC Structural Proteomics of Rational Targets initiative.Publisher PDFPeer reviewe
The Photoeccentric Effect and Proto-Hot Jupiters I. Measuring photometric eccentricities of individual transiting planets
Exoplanet orbital eccentricities offer valuable clues about the history of
planetary systems. Eccentric, Jupiter-sized planets are particularly
interesting: they may link the "cold" Jupiters beyond the ice line to close-in
hot Jupiters, which are unlikely to have formed in situ. To date,
eccentricities of individual transiting planets primarily come from radial
velocity measurements. Kepler has discovered hundreds of transiting Jupiters
spanning a range of periods, but the faintness of the host stars precludes
radial velocity follow-up of most. Here we demonstrate a Bayesian method of
measuring an individual planet's eccentricity solely from its transit light
curve using prior knowledge of its host star's density. We show that eccentric
Jupiters are readily identified by their short ingress/egress/total transit
durations -- part of the "photoeccentric" light curve signature of a planet's
eccentricity --- even with long-cadence Kepler photometry and
loosely-constrained stellar parameters. A Markov Chain Monte Carlo exploration
of parameter posteriors naturally marginalizes over the periapse angle and
automatically accounts for the transit probability. To demonstrate, we use
three published transit light curves of HD 17156 b to measure an eccentricity
of e = 0.71 +0.16/-0.09, in good agreement with the discovery value e =
0.67+/-0.08 based on 33 radial-velocity measurements. We present two additional
tests using actual Kepler data. In each case the technique proves to be a
viable method of measuring exoplanet eccentricities and their confidence
intervals. Finally, we argue that this method is the most efficient, effective
means of identifying the extremely eccentric, proto hot Jupiters predicted by
Socrates et al. (2012).Comment: ApJ, 756, 122. Received 2012 April 5; accepted 2012 July 9; published
2012 August 2
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