12,213 research outputs found
Analysis of Wind Instruments on Orofacial Anatomy: A Review of Literature
The focus of this review of literature is on orofacial anatomy and their association with the longevity of wind instrument use. The importance of how playing wind instruments creates a disadvantage for the oral cavity and therapeutic approaches to decrease the adverse effects. Using the university’s library database and PubMed, the authors performed a thorough search on the literature of our topic. Specific key terms such as wind instrumentalists, oral health, orofacial anatomy, and therapy were used to conduct our search. The searched was limited to the English language and within five years of publications. The findings acknowledged pathologically infectious microorganisms can proliferate in the mouthpiece of wind instruments, leading to diseases. The major orofacial anatomy affected by consistent use of musical instruments include salivary glands, the temporomandibular joint, and the dentition. Excessive pressure was a key factor in inflammation and damage to the hard and soft orofacial tissues. Furthermore, the reviewed literature revealed embouchure is vital to understanding a musicians oral health necessities. Developments in dentistry have been able to establish treatment in many cases for prosthodontic care and treatment plans for others wind instrumentalists so they have a chance to continue their passion with comfort and health.https://scholarscompass.vcu.edu/denh_student/1007/thumbnail.jp
Discontinuous Almost Automorphic Functions and Almost Automorphic Solutions of Differential Equations with Piecewise Constant Argument
In this article we introduce a class of discontinuous almost automorphic
functions which appears naturally in the study of almost automorphic solutions
of differential equations with piecewise constant argument. Their fundamental
properties are used to prove the almost automorphicity of bounded solutions of
a system of differential equations with piecewise constant argument. Due to the
strong discrete character of these equations, the existence of a unique
discrete almost automorphic solution of a non-autonomous almost automorphic
difference system is obtained, for which conditions of exponential dichotomy
and discrete Bi-almost automorphicity are fundamental
Blending of Cepheids in M33
A precise and accurate determination of the Hubble constant based on Cepheid
variables requires proper characterization of many sources of systematic error.
One of these is stellar blending, which biases the measured fluxes of Cepheids
and the resulting distance estimates. We study the blending of 149 Cepheid
variables in M33 by matching archival Hubble Space Telescope data with images
obtained at the WIYN 3.5-m telescope, which differ by a factor of 10 in angular
resolution.
We find that 55+-4% of the Cepheids have no detectable nearby companions that
could bias the WIYN V-band photometry, while the fraction of Cepheids affected
below the 10% level is 73+-4%. The corresponding values for the I band are
60+-4% and 72+-4%, respectively. We find no statistically significant
difference in blending statistics as a function of period or surface
brightness. Additionally, we report all the detected companions within 2
arcseconds of the Cepheids (equivalent to 9 pc at the distance of M33) which
may be used to derive empirical blending corrections for Cepheids at larger
distances.Comment: v2: Fixed incorrect description of Figure 2 in text. Accepted for
publication in AJ. Full data tables can be found in ASCII format as part of
the source distribution. A version of the paper with higher-resolution
figures can be found at
http://faculty.physics.tamu.edu/lmacri/papers/chavez12.pd
A critical appraisal of ATLAS9 and NextGen 5 model atmospheres
The fitting atmosphere parameters (Teff, g, and [Fe/H]) for over 300 stars in
the Gunn & Striker and Jacoby et al. catalogs have been obtained relying on the
Kurucz (1992) ATLAS9 and Hauschildt et al (1999) NextGen5 synthesis models. The
output results are compared, and a critical appraisal of both theoretical codes
is performed.Comment: 2 pages, 2 figures; proceedings of "New Quests in Stellar
Astrophysics: The link between Stars and Cosmology", 26-30 March, 2001,
Puerto Vallarta, Mexico, eds. M. Chavez, A. Bressan, A. Buzzoni & D. Mayya,
to be published by the Kluwer Academic Publisher
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