Results 1 to 10 of about 832 (109)

Laboratory modelling of urban flooding [PDF]

open access: yesScientific Data, 2022
Measurement(s) flow depth • Outflow discharge • Surface velocity field • Inflow discharge Technology Type(s) Ultrasonic sensor • Calibrated rating curve Q~H • Large Scale Particle Images Velocity (LSPIV) with a commercial camera LUMIX-GH4 ...
Xuefang Li   +5 more
doaj   +2 more sources

Measurement of Blood Velocity With Laser Scanning Microscopy: Modeling and Comparison of Line-Scan Image-Processing Algorithms [PDF]

open access: yesFrontiers in Physiology, 2022
Laser scanning microscopy is widely used to measure blood hemodynamics with line-scans in physiological and pathological vessels. With scans of broken lines, i.e., lines made of several segments with different orientations, it also allows simultaneous ...
Emmanuelle Chaigneau   +5 more
doaj   +2 more sources

An Evaluation of Image Velocimetry Techniques under Low Flow Conditions and High Seeding Densities Using Unmanned Aerial Systems [PDF]

open access: yesRemote Sensing, 2020
Image velocimetry has proven to be a promising technique for monitoring river flows using remotely operated platforms such as Unmanned Aerial Systems (UAS).
Sophie Pearce   +13 more
doaj   +5 more sources

Hydraulic, wash-off and sediment transport experiments in a full-scale urban drainage physical model. [PDF]

open access: yesSci Data, 2020
[Abstract] This paper presents a dataset obtained from hydraulic and sediment transport experiments performed in a full-scale urban drainage physical model of 36 m2.
Naves J, Anta J, Suárez J, Puertas J.
europepmc   +4 more sources

VISION: VIdeo StabilisatION using automatic features selection for image velocimetry analysis in rivers [PDF]

open access: yesSoftwareX, 2022
VISION is open-source software written in MATLAB for video stabilisation using automatic features detection. It can be applied for any use, but it has been developed mainly for image velocimetry applications in rivers.
Alonso Pizarro   +2 more
doaj   +4 more sources

Assessing different imaging velocimetry techniques to measure shallow runoff velocities during rain events using an urban drainage physical model [PDF]

open access: yesHydrology and Earth System Sciences, 2021
Although surface velocities are key in the calibration of physically based urban drainage models, the shallow water depths developed during non-extreme precipitation and the potential risks during flood events limit the availability of this type of data ...
J. Naves   +3 more
doaj   +6 more sources

EVALUATION OF AIRBORNE IMAGE VELOCIMETRY APPROACHES USING LOW-COST UAVS IN RIVERINE ENVIRONMENTS [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
Traditional flow velocity measurements in natural environments require contact with the fluid and are usually costly, time-consuming and, sometimes, even dangerous.
F. Ioli   +4 more
doaj   +4 more sources

Analysis of the Impact Area of the 2022 El Tejado Ravine Mudflow (Quito, Ecuador) from the Sedimentological and the Published Multimedia Documents Approach [PDF]

open access: yesGeoHazards
Quito (Ecuador) has a history of mudflow events from ravines that pose significant risks to its urban areas. Located close to the Pichincha Volcanic Complex, on 31 January 2022, the northwest and central parts of the city were hit by a mudflow triggered ...
Liliana Troncoso   +9 more
doaj   +3 more sources

Flow Measurement in Steep Channels Using Large Scale Particle Image Velocimetry (LSPIV) [PDF]

open access: yesعلوم و مهندسی آبیاری, 2022
Measuring flow discharge in rivers and open channels has always been one of the most important concerns of water sciences experts. The most common flow measurement method in open channels is velocity- area approach.
Farhad Akbarpour   +2 more
doaj   +1 more source

Large-Scale Particle Image Velocimetry to Measure Streamflow from Videos Recorded from Unmanned Aerial Vehicle and Fixed Imaging System

open access: yesRemote Sensing, 2021
The accuracy of river velocity measurements plays an important role in the effective management of water resources. Various methods have been developed to measure river velocity.
Wen-Cheng Liu   +2 more
doaj   +1 more source

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