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- Electron scattering (2)
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Articles 1 - 12 of 12
Full-Text Articles in Medicine and Health Sciences
Predictive Formula For Electron Range Over A Large Span Of Energy, Anne C. Starley
Predictive Formula For Electron Range Over A Large Span Of Energy, Anne C. Starley
Reports
A model developed by the Materials Research Group that calculates electron penetration range of some common materials, has been greatly expanded with the hope that such extensions will predict the range in other, perhaps, more interesting materials. Developments in this extended model aid in predicting the approximate penetration depth into diverse classes of materials for a broad range of energetic incident electrons (10 MeV, with better than 20% accuracy). The penetration depth—or range—of a material describes the maximum distance electrons can travel through a material, before losing all of its incident kinetic energy. This model has started to predict a …
“Whatdunit?” Developmental Changes In Children's Syntactically Based Sentence Interpretation Abilities And Sensitivity To Word Order, James W. Montgomery, Julia L. Evans, Ronald B. Gillam, Alexander V. Sergeev, Mianisha C. Finney
“Whatdunit?” Developmental Changes In Children's Syntactically Based Sentence Interpretation Abilities And Sensitivity To Word Order, James W. Montgomery, Julia L. Evans, Ronald B. Gillam, Alexander V. Sergeev, Mianisha C. Finney
Communicative Disorders and Deaf Education Faculty Publications
Aim 1 of this study was to examine the developmental changes in typically developing English-speaking children’s syntactically-based sentence interpretation abilities and sensitivity to word order. Aim 2 was to determine the psychometric standing of the novel sentence interpretation task developed for this study, as we wish to use it later with children with Specific Language Impairment (SLI). Children listened to semantically implausible sentences in which noun animacy and the natural affordance between the nouns were removed, thus controlling for event probability. Using this novel “whatdunit?” agent selection task, 256 children 7-11 years listened to two structures with canonical word order …
Strain Hardening And Anisotropy During Tensile Testing Of Sheared Model Mozzarella Cheeses, Prateek Sharma, Peter A. Munro, Tzvetelin T. Dessev, Peter G. Wiles, E. Allen Foegeding
Strain Hardening And Anisotropy During Tensile Testing Of Sheared Model Mozzarella Cheeses, Prateek Sharma, Peter A. Munro, Tzvetelin T. Dessev, Peter G. Wiles, E. Allen Foegeding
Nutrition, Dietetics, and Food Sciences Faculty Publications
We studied the tensile fracture properties of model Mozzarella cheeses with varying amounts of shear work input (3.3–73.7 kJ/kg). After manufacture, cheeses were elongated by manual rolling at 65°C followed by tensile testing at 21°C on dumbbell-shaped samples cut both parallel and perpendicular to the rolling direction. Strain hardening parameters were estimated from stress–strain curves using 3 different methods. Fracture stress and strain for longitudinal samples did not vary significantly with shear work input up to 26.3 kJ/kg and then decreased dramatically at 58.2 kJ/kg. Longitudinal samples with shear work input <30 kJ/kg demonstrated significant strain hardening by all 3 estimation methods. At shear work inputs <30 kJ/kg, strong anisotropy was observed in both fracture stress and strain. After a shear work input of 58.2 kJ/kg, anisotropy and strain hardening were absent. Perpendicular samples did not show strain hardening at any level of shear work input. Although the distortion of the fat drops in the cheese structure associated with the elongation could account for some of the anisotropy observed, the presence of anisotropy in the elongated nonfat samples reflected that shear work and rolling also aligned the protein structure.
Effect Of Shear Work Input On Steady Shear Rheology And Melt Functionality Of Model Mozzarella Cheeses, Prateek Sharma, Peter A. Munro, Tzvetelin T. Dessev, Peter G. Wiles, Robert J. Buwalda
Effect Of Shear Work Input On Steady Shear Rheology And Melt Functionality Of Model Mozzarella Cheeses, Prateek Sharma, Peter A. Munro, Tzvetelin T. Dessev, Peter G. Wiles, Robert J. Buwalda
Nutrition, Dietetics, and Food Sciences Faculty Publications
Model Mozzarella cheeses with varied amounts of shear work input were prepared by working molten cheese mass at 70 °C in a twin screw cooker. Rheology and melt functionality were found to be strongly dependent on total shear work input. A non-linear increase in consistency coefficient (K from power law model) and apparent viscosity and decrease in flow behaviour index (n from power law model) were observed with increasing amounts of accumulated shear work, indicating work thickening behaviour. An exponential work thickening equation is proposed to describe this behaviour. Excessively worked cheese samples exhibited liquid exudation, poor melting and poor …
Testing The Concurrent Validity Of A Naturalistic Upper Extremity Reaching Task, Sydney Y. Schaefer, C. R. Hennge
Testing The Concurrent Validity Of A Naturalistic Upper Extremity Reaching Task, Sydney Y. Schaefer, C. R. Hennge
Kinesiology and Health Science Faculty Publications
Point-to-point reaching has been widely used to study upper extremity motor control. We have been developing a naturalistic reaching task that adds tool manipulation and object transport to this established paradigm. The purpose of this study was to determine the concurrent validity of a naturalistic reaching task in a sample of healthy adults.This task was compared to the criterion measure of standard point-to-point reaching. Twenty-eight adults performed unconstrained out-and-back movements in three different directions relative to constant start location along midline using their nondominant arm. In the naturalistic task, participants manipulated a tool to transport objects sequentially between physical targets …
Predictive Formula For Electron Range Over A Large Span Of Energies, Anne C. Starley, Gregory Wilson, Lisa Montierth Phillipps, Jr Dennison
Predictive Formula For Electron Range Over A Large Span Of Energies, Anne C. Starley, Gregory Wilson, Lisa Montierth Phillipps, Jr Dennison
Posters
A model has been developed to predict the approximate penetration depth into diverse classes of materials for a broad range of energetic incident electrons (<10 eV to >10 MeV, with better than 20% accuracy). The penetration depth—or range—of a material describes the maximum distance electrons can travel through a material, before losing all of its incident kinetic energy. This model leads to a predictive formula that estimates the penetration depth for materials without the need for supporting data, but rather using only basic material properties and a single fitting parameter (Nv, described as the effective number of valence electrons). Nv …
Disordered Speech Disrupts Conversational Entrainment: A Study Of Acoustic-Prosodic Entrainment And Communicative Success In Populations With Communication Challenges, Stephanie A. Borrie, Nichola Lubold, Heather Pon-Barry
Disordered Speech Disrupts Conversational Entrainment: A Study Of Acoustic-Prosodic Entrainment And Communicative Success In Populations With Communication Challenges, Stephanie A. Borrie, Nichola Lubold, Heather Pon-Barry
Communicative Disorders and Deaf Education Faculty Publications
Conversational entrainment, a pervasive communication phenomenon in which dialogue partners adapt their behaviors to align more closely with one another, is considered essential for successful spoken interaction. While well-established in other disciplines, this phenomenon has received limited attention in the field of speech pathology and the study of communication breakdowns in clinical populations. The current study examined acoustic-prosodic entrainment, as well as a measure of communicative success, in three distinctly different dialogue groups: (i) healthy native vs. healthy native speakers (Control), (ii) healthy native vs. foreign-accented speakers (Accented), and (iii) healthy native vs. dysarthric speakers (Disordered). Dialogue group comparisons revealed …
Electron Penetration Range For Diverse Materials, Anne C. Starley, Lisa M. Phillipps, Jr Dennison
Electron Penetration Range For Diverse Materials, Anne C. Starley, Lisa M. Phillipps, Jr Dennison
Posters
The penetration range of energetic electrons into diverse materials can be modeled approximately with a simple fit. This fit is a function of a single parameter, Nv, which describes the effective number of valence electrons. Using the Continuous-Slow-Down-Approximation (CSDA) for energy deposition in a material, a composite analytical formula has been developed which estimates the range or maximum penetration depth of incident electrons for energies from10 MeV with an uncertainty of
Measurement Techniques For Steady Shear Viscosity Of Mozzarella-Type Cheeses At High Shear Rates And High Temperature, Prateek Sharma, Tzvetelin T. Dessev, Peter A. Munro, Peter G. Wiles, Graeme Gillies, Matt Golding, Bryony James, Patrick Janssen
Measurement Techniques For Steady Shear Viscosity Of Mozzarella-Type Cheeses At High Shear Rates And High Temperature, Prateek Sharma, Tzvetelin T. Dessev, Peter A. Munro, Peter G. Wiles, Graeme Gillies, Matt Golding, Bryony James, Patrick Janssen
Nutrition, Dietetics, and Food Sciences Faculty Publications
While measuring steady shear viscosity of Mozzarella-type cheeses in a rotational rheometer at 70 °C, three main difficulties were encountered; wall slip, structural failure during measurement and viscoelastic time dependent effects. Serrated plates were the most successful surface modification at eliminating wall slip. However, even with serrated plates shear banding occurred at higher shear rates. Because of the viscoelastic nature of the cheeses, a time dependent viscous response occurred at shear rates <1 >s−1, requiring longer times to attain steady shear conditions. Prolonged continuous shearing altered the structure of the molten cheeses. The effects of structural change were greatly reduced by …
How Autism Spectrum Disorder Affects Action Preparation In Children, Kodey Myers, Breanna E. Studenka, Daisha L. Cummins
How Autism Spectrum Disorder Affects Action Preparation In Children, Kodey Myers, Breanna E. Studenka, Daisha L. Cummins
Research on Capitol Hill
No abstract provided.
The Effects Of Age On Timing Of Gross And Fine Motor Movements, Zachary T. Skabelund
The Effects Of Age On Timing Of Gross And Fine Motor Movements, Zachary T. Skabelund
Research on Capitol Hill
No abstract provided.
Understanding Hunting Constraints And Negotiation Strategies: A Typology Of Female Hunters, Elizabeth Covelli Metcalf, Alan R. Graefe, Nate E. Trauntvein, Robert C. Burns
Understanding Hunting Constraints And Negotiation Strategies: A Typology Of Female Hunters, Elizabeth Covelli Metcalf, Alan R. Graefe, Nate E. Trauntvein, Robert C. Burns
Kinesiology and Health Science Faculty Publications
This article examined a typology of female hunters, factors constraining participation, and negotiation strategies females used to overcome constraints. A survey of Oregon hunters was conducted in the summer of 2010 to understand hunting characteristics using the 2008 big game license database (n = 392). We created a typology of female hunters using a cluster analysis of Recreation Experience Preference items. Four clusters were identified: less-engaged, family oriented, nature-sport, and all around enthusiast. Analysis of variance revealed differences among female hunter segments. Differences existed among the four groups on both constraints and negotiation strategies. One of the notable groups was …