Articles with "flow velocities" as a keyword



Comparison of algorithms for estimating blood flow velocities in cerebral arteries based on the transport information of contrast agent: An in silico study.

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Published in 2021 at "Computers in biology and medicine"

DOI: 10.1016/j.compbiomed.2021.105040

Abstract: While many algorithms have been proposed to estimate blood flow velocities based on the transport information of contrast agent acquired by digital subtraction angiography (DSA), most relevant studies focused on a single vessel, leaving a… read more here.

Keywords: blood flow; flow velocities; blood; contrast agent ... See more keywords

COMPARISON OF THE RETINAL BLOOD FLOW VELOCITY BETWEEN LASER SPECKLE FLOWGRAPHY AND THE RETINAL FUNCTION IMAGER

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Published in 2017 at "Retina"

DOI: 10.1097/iae.0000000000001375

Abstract: Purpose: To compare the retinal blood flow velocity using laser speckle flowgraphy (LSFG) and a retinal function imager (RFI) in healthy Japanese subjects. Methods: This study included a total of 15 eyes of 15 healthy… read more here.

Keywords: blood flow; retinal blood; arteries veins; flow velocities ... See more keywords

Energy-flow velocities of nondiffracting localized waves

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Published in 2019 at "Physical Review A"

DOI: 10.1103/physreva.100.013849

Abstract: A universal relation has been established between the local energy transport velocity along the direction of propagation and the group velocity of scalar and vector-valued propagation-invariant spatiotemporally localized superluminal and subluminal electromagnetic waves in free… read more here.

Keywords: velocity; nondiffracting localized; flow velocities; energy flow ... See more keywords

Simulation of Atmospheric Flow Characteristics and Selection of Models for Artificial Simulated Fog-Haze Environment

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Published in 2020 at "IEEE Access"

DOI: 10.1109/access.2020.2966215

Abstract: The devices for artificial flashover experiment should be constructed and the stability of the airflow field is the key to construct it. This work presents a methodology of constructing three models respectively without blades, with… read more here.

Keywords: artificial simulated; flow velocities; simulated fog; environment ... See more keywords

Comparison of Retinal Microvessel Blood Flow Velocities Acquired with Two Different Fields of View

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Published in 2017 at "Journal of Ophthalmology"

DOI: 10.1155/2017/2895982

Abstract: To compare the different retinal blood flow velocities (BFVs) acquired with different fields of view (FOVs) using the retinal function imager (RFI), twenty eyes of twenty healthy subjects were enrolled in the study. Retinal microvessel… read more here.

Keywords: blood flow; degree fov; flow velocities; fov ... See more keywords

Abstract TP225: Larger Basilar Arterial Diameters Correlate with Reduced Blood Flow Velocities in Ischemic Stroke Patients

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Published in 2025 at "Stroke"

DOI: 10.1161/str.56.suppl_1.tp225

Abstract: Background: Dolichoectasia (DE) is characterized by the abnormal dilation and elongation of brain arteries, leading to high morbidity and mortality, commonly presenting as ischemic stroke. However, the mechanisms underlying brain ischemia in DE are not… read more here.

Keywords: blood flow; stroke patients; ischemic stroke; flow velocities ... See more keywords

Retinal blood flow velocities in infants with retinopathy of prematurity after intravitreal administration of bevacizumab.

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Published in 2023 at "European journal of ophthalmology"

DOI: 10.1177/11206721231178062

Abstract: BACKGROUND/OBJECTIVES Progression of retinopathy of prematurity (ROP) is associated with increased retinal blood flow velocities. We investigated changes of central retinal arterial and venous blood flow after intravitreal administration of bevacizumab. SUBJECTS/METHODS Prospective observational study… read more here.

Keywords: retinal blood; retinopathy prematurity; blood; flow velocities ... See more keywords
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Concentrations of estradiol, progesterone and testosterone in sefrum and cerebrospinal fluid of patients with aneurysmal subarachnoid hemorrhage correlate weakly with transcranial Doppler flow velocities

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Published in 2021 at "BMC Neuroscience"

DOI: 10.1186/s12868-021-00634-3

Abstract: Background The implication of the steroids estradiol, progesterone and testosterone in cerebral vasospasm after aneurysmal subarachnoid hemorrhage (aSAH) has not been comprehensively assessed. In rodents, studies suggested beneficial effects of steroids on cerebral vasospasm after… read more here.

Keywords: progesterone testosterone; flow velocities; estradiol progesterone;

Assessment of in-situ tidal marsh erodibility under high flow velocities

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Published in 2024 at "Frontiers in Environmental Science"

DOI: 10.3389/fenvs.2024.1385610

Abstract: Coastal flood risk is expected to increase due to climate change and population growth. Much of our coastlines is protected by “grey” infrastructure such as a dike. Dike maintenance and strengthening requires ever increasing capital… read more here.

Keywords: erodibility; flow velocities; marsh; tidal marsh ... See more keywords

Using Quinine as a Fluorescent Tracer to Estimate Overland Flow Velocities on Bare Soil: Proof of Concept under Controlled Laboratory Conditions

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Published in 2021 at "Agronomy"

DOI: 10.3390/agronomy11071444

Abstract: This study presents a tracer technique based on the fluorescent properties of quinine to help on the visualization of shallow flows and allow a quantitative measurement of overland flow velocities. Laboratory experiments were conducted to… read more here.

Keywords: overland flow; quinine tracer; tracer; flow velocities ... See more keywords

Estimating response times, flow velocities, and roughness coefficients of Canadian Prairie basins

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Published in 2024 at "Hydrology and Earth System Sciences"

DOI: 10.5194/hess-28-5173-2024

Abstract: Abstract. The hydrology and hydrography of the Canadian Prairies are complex and difficult to represent in hydrological models. Recent studies suggest that runoff velocities on the Canadian Prairies may be much smaller than generally assumed.… read more here.

Keywords: runoff; hydrology; flow velocities; basin scale ... See more keywords