Results 21 to 30 of about 68,724 (212)

Parental Stress and Disability in Offspring: A Snapshot during the COVID-19 Pandemic

open access: yesBrain Sciences, 2021
Parenting a child with a disability, such as neurodevelopmental disorders and genetic syndromes, implies a high level of stress. During the COVID-19 outbreak—as a period implying additional challenges—few studies have specifically investigated caregivers’
Martina Siracusano   +9 more
doaj   +1 more source

3D-PTV Measuring onBubble and Liquid Velocities of a Single Bubble Jet

open access: yesJournal of Fluid Science and Technology, 2013
This experimental research concerns a simple air-bubblejet from a bottom nozzle in water. We try to conduct the measurements of the flow by applying a three-dimensional particle tracking velocimetry (3D-PTV) technique, in order to specify both bubble ...
Katsuya HIRATA   +3 more
doaj   +1 more source

Randomized crossover comparison of proportional assist ventilation and patient-triggered ventilation in extremely low birth weight infants with evolving chronic lung disease [PDF]

open access: yes, 2007
Background: Refinement of ventilatory techniques remains a challenge given the persistence of chronic lung disease of preterm infants. Objective: To test the hypothesis that proportional assist ventilation ( PAV) will allow to lower the ventilator ...
Andreas Schulze   +17 more
core   +1 more source

3D-PTV measurement verified by UVP for unsteady and three-dimensional flow inside a suction sump

open access: yesJournal of Fluid Science and Technology, 2016
Our aim is to understand the complicated flow inside a suction sump in the vertical-wet-pit-pump configuration. The information of unsteady and three-dimensional flow structures is useful, not only for this complicated flow but also for other complicated
Katsuya HIRATA   +5 more
doaj   +1 more source

MR imaging-guided vacuum assisted breast biopsy: Radiological-pathological correlation and underestimation rate in pre-surgical assessment

open access: yesEuropean Journal of Radiology Open, 2020
Background: Magnetic Resonance(MR) guided percutaneous procedures(MRgVABB) have been developed and largely employed to reduce the need of surgical biopsies for suspicious lesions which can be detected only by MR(MR-only lesion). The present study aims to
Rosaria Meucci   +13 more
doaj   +1 more source

Dosimetric validation of a magnetic resonance image gated radiotherapy system using a motion phantom and radiochromic film. [PDF]

open access: yes, 2017
PurposeMagnetic resonance image (MRI) guided radiotherapy enables gating directly on the target position. We present an evaluation of an MRI-guided radiotherapy system's gating performance using an MRI-compatible respiratory motion phantom and ...
Berbeco   +28 more
core   +1 more source

Basic Space Structure of Bubble-Jet Plume Using Consecutive 3D-PTV

open access: yesJournal of Fluid Science and Technology, 2009
This experimental research concerns the air-bubble-jet flow in water. We try to apply three-dimensional particle tracking velocimetry to the flow. Air bubbles are regarded as tracer particles.
Jiro FUNAKI   +3 more
doaj   +1 more source

C1-C8 volatile organic compounds in the atmosphere of Hong Kong: Overview of atmospheric processing and source apportionment [PDF]

open access: yes, 2007
We present measurements of C1-C8 volatile organic compounds (VOCs) at four sites ranging from urban to rural areas in Hong Kong from September 2002 to August 2003. A total of 248 ambient VOC samples were collected.
Barletta, B   +5 more
core   +1 more source

The Dosimetric Performance of Volumetric Modulated Arc Therapy and Intensity Modulated Radiation Therapy in the Treatment of Locally Advanced Laryngeal Cancer [PDF]

open access: yesMiddle East Journal of Cancer
Background: This study aims to compare the performance of intensity modulated radiation therapy (IMRT) and volumetric modulated arc therapy (VMAT) in treating laryngeal cancer.Method: In this retrospective dosimetric study, 15 patients diagnosed with ...
Firas Khater   +3 more
doaj   +1 more source

Oil Phase Velocity Measurement of Oil-Water Two-Phase Flow with Low Velocity and High Water Cut Using the Improved ORB and RANSAC Algorithm

open access: yesMeasurement Science Review, 2020
Velocity is an important parameter for fluid flow characteristics in profile logging. Particle tracking velocimetry (PTV) technology is often used to study the flow characteristics of oil wells with low flow velocity and high water cut, and the key to ...
Han Lianfu   +5 more
doaj   +1 more source

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