Results 21 to 30 of about 1,817,384 (272)

The combined use of parasternal intercostal muscle thickening fraction and P0.1 for prediction of weaning outcomes.

open access: yesHeart & Lung, 2023
BACKGROUND A variety of parameters and diaphragmatic ultrasound in ventilator weaning has been studied extensively, and the findings yield inconsistent conclusions.
Guojun He   +5 more
semanticscholar   +3 more sources

Rheological characteristics analysis of shear thickening fluids based on response surface methodology

open access: yesMaterials Research Express, 2022
This paper analyzed the influence of various components and the external environment on the rheological properties of shear thickening fluid (STF). The single-factor experimental study was carried out with the silica particle size, the mass fraction of ...
Mingmei Zhao   +4 more
doaj   +2 more sources

On the rheological properties of multi-walled carbon nano-polyvinylpyrrolidone/silicon-based shear thickening fluid

open access: yesNanotechnology Reviews, 2021
This study examines the rheological properties of shear thickening fluid (STF) enhanced by additives such as multi-walled carbon nanotubes (MWCNTs), polyvinylpyrrolidone (PVP), and nano-silica (SiO2) at different mass fraction ratios.
Sun Li   +4 more
doaj   +2 more sources

Vibration Characteristics of Shear Thickening Fluid-Based Sandwich Structures

open access: yesAdvances in Polymer Technology, 2022
The vibration attenuation mechanism of shear thickening fluid- (STF-) filled sandwich structures was investigated in this study. Structural equivalent damping, stiffness, and mass increased simultaneously with the increase in the volume fraction of shear
Ping Wang   +3 more
doaj   +2 more sources

Poor Correlation between Diaphragm Thickening Fraction and Transdiaphragmatic Pressure in Mechanically Ventilated Patients and Healthy Subjects

open access: yesAnesthesiology, 2021
Background: The relationship between the diaphragm thickening fraction and the transdiaphragmatic pressure, the reference method to evaluate the diaphragm function, has not been clearly established.
Thomas Poulard   +7 more
semanticscholar   +4 more sources

Scaling Analysis of Shear Thickening Suspensions

open access: yesFrontiers in Physics, 2022
Dense suspensions of particles in viscous liquid often demonstrate the striking phenomenon of abrupt shear thickening, where their viscosity increases strongly with increase of the imposed stress or shear rate. In this work, discrete-particle simulations
Nelya Malbranche   +3 more
doaj   +2 more sources

The ratio of parasternal intercostal muscle-thickening fraction-to-diaphragm thickening fraction for predicting weaning failure.

open access: yesJournal of Critical Care
Diaphragm dysfunction is associated with weaning outcomes in mechanical ventilation patients, in the case of diaphragm dysfunction, the accessory respiratory muscles would be recruited. The main purpose of this study is to explore the performance of parasternal intercostal muscle thickening fraction in relation to diaphragmatic thickening fraction ...
Li Peng   +5 more
semanticscholar   +3 more sources

Nursing-based precision assessment of nutrition and muscle status without ultrasound: a prospective observational study in mechanically ventilated neurosurgical patients [PDF]

open access: yesFrontiers in Medicine
BackgroundCritically ill neurosurgical patients on prolonged mechanical ventilation rapidly develop muscle wasting and malnutrition that hinder weaning and recovery. Ultrasound is useful but not always available for routine nursing assessment.
Chenliang Pan   +5 more
doaj   +2 more sources

Ultrasound assessment of the respiratory system using diaphragm motion-volume indices

open access: yesFrontiers in Medicine, 2023
BackgroundAlthough previous studies have determined limit values of normality for diaphragm excursion and thickening, it would be beneficial to determine the normal diaphragm motion-to-inspired volume ratio that integrates the activity of the diaphragm ...
Alain Boussuges   +8 more
doaj   +1 more source

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