Results 21 to 30 of about 13,400,617 (291)

Passive Leg Raise Stress Echocardiography in Severe Paradoxical Low-Flow, Low-Gradient Aortic Stenosis. [PDF]

open access: yes, 2022
BACKGROUND Dobutamine stress echocardiography is used to increase transvalvular flow in patients with low-flow, low-gradient aortic stenosis (AS). Dobutamine fails to increase the stroke volume index (SVI) in one third of patients.
Buffle, Eric   +11 more
core   +1 more source

Prolonged low flow reduces reactive hyperemia and augments low flow mediated constriction in the brachial artery independent of the menstrual cycle [PDF]

open access: yes, 2013
© 2013 Rakobowchuk et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are ...
Gibbins, Sarah E.   +19 more
core   +2 more sources

Low temperature flow lithography [PDF]

open access: yesBiomicrofluidics, 2018
Flow lithography (FL) is a microfluidic technique distinguished for its ability to produce hydrogel microparticles of various geometrical and chemical designs. While FL is typically performed in room temperature, this paper reports a new technique called low temperature flow lithography that uses low synthesis temperature to increase the degree of ...
H. Lee, Y. H. Roh, H. U. Kim, K. W. Bong
openaire   +2 more sources

Change of inspired oxygen concentration in low flow anesthesia [PDF]

open access: yesAnesthesia and Pain Medicine, 2020
Background There are several advantages of low flow anesthesia including safety, economics, and eco-friendliness. However, oxygen concentration of fresh gas flow and inspired gas are large different in low flow anesthesia.
Jiwook Kim   +5 more
doaj   +1 more source

Flow Continuity of Infusion Systems at Low Flow Rates [PDF]

open access: yesAnaesthesia and Intensive Care, 1995
Infusion of fluids and drugs at very low rates may be necessary in neonatal intensive care. Marked haemodynamic fluctuations occurring during the infusion of inotropes have been shown to be due to the sticking of the plunger in the barrel of syringes used in syringe drivers.
Dunster, KR, Colditz, PB
openaire   +4 more sources

Hydrological Drought Frequency Analysis in Water Management Using Univariate Distributions

open access: yesApplied Sciences, 2023
The study of extreme phenomena in hydrology generally involves frequency analysis and a time series analysis. In this article we provide enough mathematics to enable hydrology researchers to apply a wide range of probability distributions in frequency ...
Cristian Gabriel Anghel, Cornel Ilinca
doaj   +1 more source

The Use of Superb Microvascular Imaging in Evaluating Rheumatic Diseases: A Systematic Review

open access: yesMedicina, 2023
Background and Objectives: Superb microvascular imaging is an advanced Doppler algorithm that seems to be useful in detecting low-velocity blood flow without using a contrast agent.
Goda Seskute   +3 more
doaj   +1 more source

Increasing Alaskan river discharge during the cold season is driven by recent warming

open access: yesEnvironmental Research Letters, 2023
Arctic hydrology is experiencing rapid changes including earlier snow melt, permafrost degradation, increasing active layer depth, and reduced river ice, all of which are expected to lead to changes in stream flow regimes. Recently, long-term (>60 years)
Dylan Blaskey   +6 more
doaj   +1 more source

Turbulent structures, integral length scale and turbulent kinetic energy (TKE) dissipation rate in compound channel flow [PDF]

open access: yes, 2017
In the present study, high data rate measurements were obtained for the streamwise and vertical velocity components using 2D Laser Doppler Velocimeter. The turbulent field in a straight compound-channel flow was characterized for three different uniform ...
Roja-Solórzano, Luís R.   +3 more
core   +1 more source

An Analytical Model of Thermal Conductivity for Carbon/Carbon Composites with Pitch-Based Matrix

open access: yesAdvances in Mechanical Engineering, 2015
The carbon/carbon (C/C) composites are composed of carbon fibers, carbon matrix, and pores and cracks, which have been successfully used in various aerospace applications. In this paper, nanoscale submodel is proposed to describe the thermal conductivity
Zhi-Hai Feng   +5 more
doaj   +1 more source

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