356 research outputs found
A Balance of Interests: the Concordance of Copyright Law and Moral Rights in the Worldwide Economy
LECTURE IN INTERNAL MEDICINE PROPAEDEUTIC
Wide QRS Tachycardia with Atrioventricular Dissociation and an HV Interval of 60 msec
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/73193/1/j.1540-8167.1997.tb00814.x.pd
Iodine deficiency disorder (IDD) of the thyroid gland & Thyrotoxicosis
Notes for the Practical lesson in Internal Medicin
Extending the limits of globule detection -- ISOPHOT Serendipity Survey Observations of interstellar clouds
A faint MJysr bipolar globule was discovered with the
ISOPHOT 170 m Serendipity Survey (ISOSS). ISOSS J 20246+6541 is a cold
( K) FIR source without an IRAS pointsource counterpart.
In the Digitized Sky Survey B band it is seen as a 3\arcmin size bipolar
nebulosity with an average excess surface brightness of
mag/\arcsec . The CO column density distribution determined by
multi-isotopic, multi-level CO measurements with the IRAM-30m telescope agrees
well with the optical appearance. An average hydrogen column density of
cm was derived from both the FIR and CO data. Using a
kinematic distance estimate of 400 pc the NLTE modelling of the CO, HCO,
and CS measurements gives a peak density of cm. The
multiwavelength data characterise ISOSS 20246+6541 as a representative of a
class of globules which has not been discovered so far due to their small
angular size and low 100m brightness. A significant overabundance of
CO is found . This is likely due to
isotope selective chemical processes.Comment: 5 pages, 3 figure
Hypothyroidism & Thyroiditis
Notes for the Practical lesson in Internal Medicin
Chronic insufficiency of adrenal glands, Hyperfunction of adrenal glands (hyperaldosteronism and hypercortisolism), Acute insufficiency of adrenal glands (acute adrenal crisis), Hormonally active adrenal tumors
Notes for the Practical lesson in Internal Medicin
Clinical Value of the Postpacing Interval for Mapping of Ventricular Tachycardia in Patients with Prior Myocardial Infarction
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/72569/1/j.1540-8167.1999.tb00640.x.pd
Radiofrequency Ablation of Idiopathic Left Anterior Fascicular Tachycardia
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/71580/1/j.1540-8167.1995.tb00389.x.pd
Effect of Dust Extinction on Estimating Star Formation Rate of Galaxies: Lyman Continuum Extinction
We re-examine the effect of Lyman continuum ( \AA)
extinction (LCE) by dust in H {\sc ii} regions in detail and discuss how it
affects the estimation of the global star formation rate (SFR) of galaxies. To
clarify the first issue, we establish two independent methods for estimating a
parameter of LCE (), which is defined as the fraction of Lyman continuum
photons contributing to hydrogen ionization in an H {\sc ii} region. One of
those methods determines from the set of Lyman continuum flux, electron
density and metallicity. In the framework of this method, as the metallicity
and/or the Lyman photon flux increase, is found to decrease. The other
method determines from the ratio of infrared flux to Lyman continuum flux.
Importantly, we show that f \la 0.5 via both methods in many H {\sc ii}
regions of the Galaxy. Thus, it establishes that dust in such H {\sc ii}
regions absorbs significant amount of Lyman continuum photons directly. To
examine the second issue, we approximate to a function of only the
dust-to-gas mass ratio (i.e., metallicity), assuming a parameter fit for the
Galactic H {\sc ii} regions. We find that a characteristic , which is
defined as averaged over a galaxy-wide scale, is 0.3 for the nearby spiral
galaxies. This relatively small indicates that a typical increment
factor due to LCE for estimating the global SFR () is large () for the nearby spiral galaxies. Therefore, we conclude that the effect of
LCE is not negligible relative to other uncertainties of estimating the SFR of
galaxies.Comment: 18 papges, 11 figures, accepted by Ap
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