PURPOSE Adult human vocal tracts display considerable morphological variation across individuals, but the nature and extent of this variation has not been extensively studied for many vocal tract structures. There exists a need to analyze morphological variation and, even more basically, to develop a methodology for morphological analysis of the vocal tract. Such analysis will facilitate fundam...

BACKGROUND Swimming pool attendance exposes users to infection and chemical risks that could be largely reduced with the adoption of healthy behaviors. This study aims to investigate if the knowledge of swimming pool regulations and awareness of health risks can be associated with users' health-related behaviors. METHODS A cross-sectional study was conducted using self-administered questionna...

To date, much of the genetics of the basidiomycete Thanatephorus cucumeris (anamorph = Rhizoctonia solani) remains unknown. Here, we present a population genetics study using codominant markers to augment laboratory analyses. Seven single-copy nuclear RFLP markers were used to examine 182 isolates of Rhizoctonia solani AG-1 IA collected from six commercial rice fields in Texas. Thirty-six multi...

The budgeting literature has long focused on “institutional friction” as a cause of ubiquitous punctuated equilibrium (PE) findings. A recent wave of scholarship looks to identify specific institutional mechanisms that affect the number of punctuations in policy outputs. We contribute to this growing body of research by focusing on the complexity of the institutional environment surrounding a p...

The approach to equilibrium in a buoyant-density gradient is a transport process in a centrifugal field and may be used to measure a sedimentation coefficient. This process is interesting for several reasons. Densitygradient sedimentation equilibrium can be used for the determination of the molecular weight of high-molecular weight DNA samples homogeneous in buoyant density. Furthermore, buoyan...

BACKGROUND Phase imaging derived from equilibrium radionuclide angiography presents the ventricular contraction sequence. It has been widely but only indirectly correlated with the sequence of electrical myocardial activation. OBJECTIVES We sought to determine the specific relationship between the sequence of phase progression and the sequence of myocardial activation, contraction and conduct...

The relative rates of erosion by rivers and glaciers, and the topographic effects of these two different styles of erosion, remain outstanding problems in geomorphology. We use a quantitative description of local fluvial landscapes to estimate how glaciated landscapes might look now had glaciers not developed. This indicates the landscape modification attributable to glacial erosion. We present...

Bovine high density lipoprotein, floating between densities of 1.063 g per ml and 1.125 g per ml, constitutes about 80% of all bovine serum lipoproteins. Preparations of this lipoprotein appear homogeneous by several criteria: electrophoresis, sedimentation velocity, sedimentation equilibrium, and NH2terminal amino acid analysis. Bovine high density Iipoprotein is a spherical protein-lipid aggr...

Standard notions of equilibrium in infinite-horizon interactions support a course of action by the players' beliefs that a deviation will be "punished". Along the equilibrium path, players optimize with respect to their beliefs and thus never realize these punishments. In the case of infinitely repeated games with complete information, this approach often results in "Folk Theorem". Under the so...