Results 21 to 30 of about 3,019,828 (293)

Fiscal Measurement and Oil and Gas Production Market: Increasing Reliability Using Blockchain Technology

open access: yesApplied Sciences, 2022
The market of oil and gas has many particularities, once it is a natural resource of great value. Due to the fact the resource is owned by nations, it is highly regulated.
Carlos Barateiro   +4 more
doaj   +1 more source

Determinism in the one-way model [PDF]

open access: yes, 2005
We introduce a flow condition on open graph states (graph states with inputs and outputs) which guarantees globally deterministic behavior of a class of measurement patterns defined over them. Dependent Pauli corrections are derived for all such patterns,
Elham Kashefi   +3 more
core   +4 more sources

Prediction of Flow Velocity from the Flexural Vibration of a Fluid-Conveying Pipe Using the Transfer Function Method

open access: yesApplied Sciences, 2021
This study presents a method to predict the flow velocity in a fluid-conveying pipe using vibration signals from the pipe surface. The flexural vibration of a fluid pipe is investigated through wave propagation.
Wonseok Yang
doaj   +1 more source

Hierarchical confirmatory factor analysis of the flow state scale in exercise [PDF]

open access: yes, 2000
In this study, we examined the factor structure and internal consistency of the Flow State Scale using responses of exercise participants.This self-report questionnaire consists of nine subscales designed to assess flow in sport and physical activity. It
Karageorghis, CI   +2 more
core   +3 more sources

Application of Ultrasonic Flowmeter in Yellow-river Irrigation Channels

open access: yesGuan'gai paishui xuebao, 2023
【Objective】 As the allocation of Yellow River water for irrigation diminishes, there is a pressing need to improve irrigation management. A fundamental requirement for achieving this objective is a comprehensive understanding of water flow in each ...
WANG Xucun, WU Rong, MA Jiadong
doaj   +1 more source

Background-oriented schlieren (BOS) for scramjet inlet-isolator investigation [PDF]

open access: yes, 2018
Background-oriented Schlieren (BOS) technique is a recently invented non-intrusive flow diagnostic method which has yet to be fully explored in its capabilities.
Idris, Azam Che   +3 more
core   +1 more source

Influence of spheroidal particle shape on particle size characterization by multi-wavelength light extinction method

open access: yesResults in Physics, 2018
In order to improve the applicability, spheroidal particles are substituted for the spherical particles in the traditional modeling of multi-wavelength light extinction method.
Yi Zhou   +4 more
doaj   +1 more source

Development of a Measurement Device for Micro Gas Flowrate Based on Laminar Flow Element with Micro-Curved Surface

open access: yesMicromachines
The laminar flow meter (LFM) boasts several advantages such as no moving parts, a wide range ratio, high measurement accuracy, quick dynamic response, etc., and is a promising technology for micro gas flow measurement.
Zixuan Wang   +4 more
doaj   +1 more source

Measurement of Orifice Plate Edge Sharpness

open access: yesMeasurement + Control, 1973
A significant factor which affects the accurate prediction of the discharge coefficients of square edged orifice plates is the precise shape of the edge.
T. J. S. Brain, J. Reid
doaj   +1 more source

Particle size distribution measurement based on ultrasonic attenuation spectra using burst superposed wave

open access: yesResults in Physics, 2019
In the characterization of particle size distribution (PSD) using ultrasonic attenuation method, the spectrum characteristics such as bandwidth or the number of frequencies is of great significance.
Nan Jia, Ming-xu Su, Xiao-shu Cai
doaj   +1 more source

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