Results 281 to 290 of about 10,115,388 (315)

Optimization of Synthetic Vocal Fold Models for Glottal Closure

Journal of Engineering and Science in Medical Diagnostics and Therapy, 2022
Abstract Synthetic, self-oscillating models of the human vocal folds are used to study the complex and inter-related flow, structure, and acoustical aspects of voice production. The vocal folds typically collide during each cycle, thereby creating a brief period of glottal closure that has important implications for flow, acoustic, and ...
Cassandra J, Taylor, Scott L, Thomson
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Protein folding model focuses on 'designability'

Chemical & Engineering News Archive, 1996
In a technical tour de force, researchers have computed for the first time the thermodynamic energies of all possible structures for model proteins having 27 amino acids. Based on those results, they propose that the "designability" hypothesis of protein folding explains why only a very small subset of possible protein configurations is found in nature.
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Transient, Highly Populated, Building Blocks Folding Model

Cell Biochemistry and Biophysics, 2001
Protein folding is a hierarchical event, in which transiently formed local structural elements assemble to yield the native conformation. In principle, multiple paths glide down the energy landscape, but, in practice, only a few of the paths are highly traveled. Here, the literature is reviewed in this light, and, particularly, a hierarchical, building
C J, Tsai, R, Nussinov
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A four-fold model for subgrouping the Hyperkinetic/MBD Syndrome

Child Psychiatry and Human Development, 1979
The major finding of this study is that the presence or absence of aggressive symptomatology differentiates a group of 84 six to twelve year-old Hyperkinetic/MBD boys on a number of important measures at initial referral, during treatment with methylphenidate, and at subsequent five-year-follow-up. When the sample is sorted into high and low aggression
J E, Langhorne, J, Loney
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On Stable States in a Topologically Driven Protein Folding Model

Journal of Computational Biology, 2017
Theoretical models of protein folding often make simplifying assumptions that allow analysis, yielding interesting theoretical results. In this article, we study models where folding dynamics is primarily driven by local topological features in an iterative manner.
Zheng Dai, David Becerra, Jérôme Waldispühl   +2 more
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Chaotic vibrations of a vocal fold model with a unilateral polyp

The Journal of the Acoustical Society of America, 2004
A nonlinear model was proposed to study chaotic vibrations of vocal folds with a unilateral vocal polyp. The model study found that the vocal polyp affected glottal closure and caused aperiodic vocal fold vibrations. Using nonlinear dynamic methods, aperiodic vibrations of the vocal fold model with a polyp were attributed to low-dimensional chaos ...
Yu, Zhang, Jack J, Jiang
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Simple folding model for HP lattice proteins

1996
Combining the model of unguided, cotranslational folding of a nascent peptide chain with HP lattice proteins we designed a fast and straightforward folding algorithm. In choosing the search depth that is “looked ahead” at each chain growth step we tradeoff conformational search and accuracy against computational demands.
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$Ω$-deuteron Interaction in Folding Model

2019
A simple single folding model for $Ω$-deuteron with maximal spin $\left(I\right)J^{P}=\left(0\right)5/2^{+}$ is investigated. $Ω$ is assumed to orbit an unperturbed deuteron in a $Ω$-deuteron potential based on a separable $Ω$-nucleon potential from lattice QCD. We show that the effective central folding potential of $Ωd$ in the $^{5}S_{2}$ channel has
Etminan, Faisal, Firoozabadi, Mohammad Mehdi   +1 more
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Flow separation in a computational oscillating vocal fold model

The Journal of the Acoustical Society of America, 2004
A finite-volume computational model that solves the time-dependent glottal airflow within a forced-oscillation model of the glottis was employed to study glottal flow separation. Tracheal input velocity was independently controlled with a sinusoidally varying parabolic velocity profile.
Fariborz, Alipour, Ronald C, Scherer
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Folding model with three-body force

Journal of Physics G: Nuclear and Particle Physics, 1994
A folding model for the nucleon-nucleus interaction potential involving a three-body force is presented. Well known models for the nuclear two-body density have been used to derive, under the zero-range approximation, an expression for the two-body effective interaction which includes the three-body force contribution as an additional density ...
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