Results 11 to 20 of about 13,142 (151)
Remote 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).
Ian Maddock +2 more
exaly +3 more sources
Experiments on Nonlocal Fluid-Flow Metamaterials. [PDF]
Adv Sci (Weinh)A nonlocal fluid‐flow metamaterial composed of standard microfluidic tubes and connectors is designed. Hence, the current of the system at one position depends on the gradient of fluid flow at many other positions, leading to unusual alternating backward and forward laminar flows of water.
Wang K, Chen Y, Wegener M.
europepmc +2 more sources
IEEE Photonics Journal, 2022 We developed a digital electro-optical phase-locked-loop (EO-PLL) utilizing a repetitive control, allowing the use of very nonlinear tunable lasers for frequency-modulated continuous-wave (FMCW) light detection and ranging (LIDAR) applications.
Michael Hauser, Michael Hofbauer
doaj +1 more source
Feasibility of Optical Flow Field Measurements of the Coolant in a Grinding Machine
Applied Sciences, 2021 For industrial grinding processes, the workpiece cooling by metalworking fluids, which strongly influences the workpiece surface layer quality, is not yet fully understood.
Björn Espenhahn +5 more
doaj +1 more source
The Effect of External Cephalic Version on Fetal Circulation: A Prospective Cohort Study
Children, 2023 External cephalic version (ECV) is a cost-effective and safe treatment option for breech presentation at term. Following ECV, fetal well-being is assessed via a non-stress test (NST). An alternative option to identify signs of fetal compromise is via the
Offra Engel +5 more
doaj +1 more source
Frontiers in Earth Science, 2023 The 2021 eruption at Tajogaite (Cumbre Vieja) volcano (La Palma, Spain) was characterized by Strombolian eruptions, Hawaiian fountaining, white gas-dominated and grey ash-rich plumes, and lava effusion from multiple vents.
Janine Birnbaum +15 more
doaj +1 more source
Characterization of the Interaction of Metalworking Fluids with Grinding Wheels
Journal of Manufacturing and Materials Processing, 2022 The thermal load that occurs during grinding can be reduced with the aid of an optimized metalworking fluid (MWF) supply. In previous work, mainly the free jet was considered for the determination of the conditions required for an optimized MWF supply ...
Lukas Schumski +5 more
doaj +1 more source
'DefocusTracker': A Modular Toolbox for Defocusing-based, Single-Camera, 3D Particle Tracking
Journal of Open Research Software, 2021 The need for single-camera 3D particle tracking methods is growing, among others, due to the increasing focus in biomedical research often relying on single-plane microscopy imaging.
Rune Barnkob, Massimiliano Rossi
doaj +1 more source
Sensors, 2016 Optical feedback interferometry (OFI) is a compact sensing technique with recent implementation for flow measurements in microchannels. We propose implementing OFI for the analysis at the microscale of multiphase flows starting with the case of parallel ...
Evelio E. Ramírez-Miquet +5 more
doaj +1 more source
The dependence of speckle contrast on velocity: a numerical study
Journal of the European Optical Society-Rapid Publications, 2022 We study how the speckle contrast depends on scatterer velocity, with the goal of further developing laser speckle imaging as a quantitative measurement technique. To that end, we perform interferometric computer simulations on a dilute plug flow.
van As Kevin +4 more
doaj +1 more source