Articles with "pressure difference" as a keyword



Impact of Pulmonary Valve Regurgitation on Pressure Difference of Pulmonary Valve Stenosis in Patients with Tetralogy of Fallot After Repair

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Published in 2018 at "Pediatric Cardiology"

DOI: 10.1007/s00246-018-1947-z

Abstract: Pressure difference (PD) is an important parameter in evaluating the degree of stenotic lesion. However, PD is influenced by the blood flow volume passing through the stenosis. In patients with tetralogy of Fallot (TOF), pulmonary… read more here.

Keywords: pressure difference; valve; stenosis patients; pulmonary valve ... See more keywords

Noninvasive assessment of intraventricular pressure difference in left ventricular dyssynchrony using vector flow mapping

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Published in 2020 at "Heart and Vessels"

DOI: 10.1007/s00380-020-01664-3

Abstract: Diastolic intraventricular pressure difference (IVPD) reflects left ventricular (LV) diastolic function. The relative pressure imaging (RPI) enables the noninvasive quantification of IVPD based on vector flow mapping (VFM) and visualization of regional pressure distribution. LV… read more here.

Keywords: pressure difference; ivpd; dyssynchrony; intraventricular pressure ... See more keywords

Contraction of collecting lymphatics: organization of pressure-dependent rate for multiple lymphangions

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Published in 2018 at "Biomechanics and Modeling in Mechanobiology"

DOI: 10.1007/s10237-018-1042-7

Abstract: The paper describes the extension of a previously developed model of pressure-dependent contraction rate to the case of multiple lymphangions. Mechanical factors are key modulators of active lymphatic pumping. As part of the evolution of… read more here.

Keywords: pressure difference; pressure dependent; multiple lymphangions; contraction ... See more keywords

Use of Blended Blade and End Wall method in compressor cascades: Definition and mechanism comparisons

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Published in 2019 at "Aerospace Science and Technology"

DOI: 10.1016/j.ast.2019.06.045

Abstract: Abstract Modern turbomachinery design uses the endwall treatment method to prevent the corner flow from separating. This study presents the Blended Blade and End Wall (BBEW) method, a passive endwall treatment method, and draws the… read more here.

Keywords: blade end; method; blended blade; pressure difference ... See more keywords

Morphological characteristics of gas-liquid interfaces receding through the mesoscopic gap with a sharp feature

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Published in 2020 at "Colloids and Surfaces A: Physicochemical and Engineering Aspects"

DOI: 10.1016/j.colsurfa.2020.124629

Abstract: Abstract The morphological characteristics of the gas-liquid interfaces receding through the gap with a sharp feature in a quasi-static fashion is investigated in this paper. A series of quasi-static experiments have been performed. A theoretical… read more here.

Keywords: gap; pressure difference; liquid; gas liquid ... See more keywords

Effects of injection pressure difference on droplet size distribution and spray cone angle in spray cooling of liquid nitrogen

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Published in 2017 at "Cryogenics"

DOI: 10.1016/j.cryogenics.2017.01.011

Abstract: Abstract Spray cooling with liquid nitrogen as the working fluid has been widely employed in a plenty of fields requiring cooling at cryogenic temperature, such as the cryogenic wind tunnels and cooling super-conducting magnets. In… read more here.

Keywords: pressure difference; spray cooling; spray; injection pressure ... See more keywords

Effect of pressure difference between adjacent channels in an adjustable flow field in PEM fuel cells

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Published in 2017 at "International Journal of Hydrogen Energy"

DOI: 10.1016/j.ijhydene.2016.10.164

Abstract: Abstract Some of the most commonly used flow fields in proton exchange membrane (PEM) fuel cells have serpentine channels, parallel channels or interdigitated channels, and each type has its advantages and disadvantages. Hybrid flow-fields may… read more here.

Keywords: field; flow field; pressure difference; flow fields ... See more keywords

Carwash wastewater treatment by micro and ultrafiltration membranes: Effects of geometry, pore size, pressure difference and feed flow rate in transport properties

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Published in 2017 at "Journal of water process engineering"

DOI: 10.1016/j.jwpe.2017.03.012

Abstract: Abstract Micro and ultrafiltration hydrophilic membranes were investigated for carwash wastewater reclamation. The effects of geometry as well as operating conditions such as pressure difference across the membrane and feed flow rate were investigated aiming… read more here.

Keywords: pressure difference; geometry; micro ultrafiltration;

Membrane distillation against a pressure difference

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Published in 2017 at "Journal of Membrane Science"

DOI: 10.1016/j.memsci.2016.10.054

Abstract: Membrane distillation is an attractive technology for production of fresh water from seawater. The MemPower®MemPower® concept, studied in this work, uses available heat (86 °C) to produce pressurized water (2.2 bar and 46 °C) by… read more here.

Keywords: membrane distillation; pressure difference; membrane; distillation pressure ... See more keywords

Isovolumic relaxation intraventricular pressure difference predicts elevated left ventricular end-diastolic pressure in patients with coronary artery disease

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Published in 2024 at "Scientific Reports"

DOI: 10.1038/s41598-024-79278-2

Abstract: Current guideline for evaluating diastolic function requires multiple parameters to identify patients with elevated left ventricular end-diastolic pressure (LVEDP). However, the intermediate result still exists and may cause LVEDP undetermined. Previous studies have shown intraventricular… read more here.

Keywords: pressure; isovolumic relaxation; pressure difference; lvedp ... See more keywords

An exploration of physical mechanism for dynamic permeability using a microscopic computational fluid dynamic model

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Published in 2024 at "Physics of Fluids"

DOI: 10.1063/5.0211454

Abstract: Dynamic permeability is a frequency-dependent parameter in the Darcy model for analyzing the porous-flow problem with time-varying pressure. Until now, physical mechanisms behind the associated correlation are still unclear. To uncover the physics, we built… read more here.

Keywords: permeability; pressure difference; model; dynamic permeability ... See more keywords