Results 31 to 40 of about 771,464 (302)

Hearing the Hidden Agenda: The Ethnographic Investigation of Procedure [PDF]

open access: yes, 1988
Laser Doppler flowmetry (LDF) is virtually the only non-invasive technique, except for other laser speckle based techniques, that enables estimation of the microcirculatory blood flow. The technique was introduced into the field of biomedical engineering
Conley, John M., O\u27Barr, William M.
core   +3 more sources

Minimally destructive, Doppler measurement of a quantized, superfluid flow

open access: yes, 2016
The Doppler effect, the shift in the frequency of sound due to motion, is present in both classical gases and quantum superfluids. Here, we perform an in-situ, minimally destructive measurement, of the persistent current in a ring-shaped, superfluid Bose-
Anderson, N.   +5 more
core   +1 more source

FLOW VELOCITY MEASUREMENT METHODS USING ELECTRICAL CAPACITANCE TOMOGRAPHY

open access: yesInformatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska, 2017
The current methods of calculating the velocity field based on a twin-plane electrical capacitance system for multiphase flows are presented. The described methods allow to calculate the velocity profile of the multiphase flow in cross-section of ...
Volodymyr Mosorov   +2 more
doaj   +1 more source

On the Use of a Single Beam Acoustic Current Profiler for Multi-Point Velocity Measurement in a Wave and Current Basin

open access: yesSensors, 2020
Harnessing the energy of tidal currents has huge potential as a source of clean renewable energy. To do so in a reliable and cost effective way, it is critical to understand the interaction between tidal turbines, waves, and turbulent currents in the ...
Marilou Jourdain de Thieulloy   +6 more
doaj   +1 more source

Aortic frequency response determination via bioimpedance plethysmography

open access: yes, 2019
Objective: Arterial stiffness is an important marker to predict cardio vascular events. Common measurement techniques to determine the condition of the aorta are limited to the acquisition of the arterial pulse wave at the extremities.
Hauschild, Sebastian   +3 more
core   +1 more source

A high-flux BEC source for mobile atom interferometers [PDF]

open access: yes, 2015
Quantum sensors based on coherent matter-waves are precise measurement devices whose ultimate accuracy is achieved with Bose-Einstein condensates (BEC) in extended free fall.
Ahlers, Holger   +14 more
core   +3 more sources

Perspective of a Ku-Ka Dual-Frequency Scatterometer for Simultaneous Wide-Swath Ocean Surface Wind and Current Measurement

open access: yesRemote Sensing, 2018
Ocean surface wind and current are essential ocean dynamic environment and climate variables, and simultaneous observations at high resolution have attracted considerable interest.
Yuanjing Miao   +3 more
doaj   +1 more source

A multi-angle plane wave imaging approach for high frequency 2D flow visualization in small animals: simulation study in the murine arterial system [PDF]

open access: yes, 2014
To preclinically investigate the role of hemodynamics in atherogenesis, mouse models are particularly useful due to the rapid disease development. As such, murine blood flow visualization has become an important tool, with current US systems equipped ...
Ekroll, Ingvild   +5 more
core   +1 more source

Estimation based PID controller-sensorless wave based technique [PDF]

open access: yes, 2009
This paper presents a sensorless estimation algorithm for estimating °exible system parameters, dynamics and externally applied forces or torques due to system interaction with the environment.
Khalil, Islam   +3 more
core   +1 more source

Transverse motions in CSOs?

open access: yes, 2009
The measurement of proper motions in CSOs is a powerful tool to determine the dynamical evolution of the newly born extragalactic radio sources. We observed 3 CSOs with the VLBA in 2004 and in 2006 to monitor changes in their structure and measure the ...
Alexander   +12 more
core   +1 more source

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