J. Polym. Sci. B Polym. Phys.
 1999
DOI: 10.1002/(sici)1099-0488(19991001)37:19<2771::aid-polb6>3.0.co;2-9
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Rheology of molten polystyrene with dissolved supercritical and near-critical gases

Choongyong Kwag
1
,
Charles W. Manke
2
,
Esin Gulari
3
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Cited by 127 publications

(116 citation statements)
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“…The free volume theory of Gerhardt et al for the viscoelastic scaling factor a c , which scales the viscosity−shear rate curves for polymer−SCF systems onto the viscosity curve for the pure polymer, was found to be in good agreement with experimental a c values measured by Kwag et al for the PS−CO 2 system. The model is able to accurately predict the effect of the CO 2 concentration on a c .…”
Section: Discussionsupporting
confidence: 77%
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
“…The free volume theory of Gerhardt et al for the viscoelastic scaling factor a c , which scales the viscosity−shear rate curves for polymer−SCF systems onto the viscosity curve for the pure polymer, was found to be in good agreement with experimental a c values measured by Kwag et al for the PS−CO 2 system. The model is able to accurately predict the effect of the CO 2 concentration on a c .…”
Section: Discussionsupporting
confidence: 77%
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
“…The CO 2 polymer‐solution density is calculated using the Sanchez–Lacombe equation of state. The values obtained for the mixture density correspond well with experimental solubility measurements found in the literature 11, 25, 38. The pressure drop across the die and the volumetric flow rate of the mixture are used to determine the apparent viscosity as a function of shear rate using eqs 10–12.…”
Section: Experimental Materials and Methodssupporting
confidence: 77%
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
“…Both Gendron and Correa and Kwag et al report trends of higher a T 1 , P 1 ,ϕ shift factors than this study. The difference in a T 1 , P ,0 values are a key difference between Kwag et al and this study.…”
Section: Resultscontrasting
confidence: 49%
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
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