Results 21 to 30 of about 221,463 (266)

Determining the envelope of the blood flow velocity in Doppler ultrasound [PDF]

International Journal of Electronics and Telecommunications
This paper describes and tests a method for automatically determining the envelope of the blood flow velocity curve in ultrasonic Doppler imaging, which was implemented in a prototype of the 128-channel mobile ultrasound B-mode scanner.
Jarosław Majewski, Krzysztof J. Opieliński, Paweł Żogał, Andrzej Wiktorowicz   +3 more
doaj   +1 more source

Determination of minimum flood flow for regeneration of floodplain forest from inundated forest width-stage curve

Water Science and Engineering, 2010
Floods are essential for the regeneration and growth of floodplain forests in arid and semiarid regions. However, river flows, and especially flood flows, have decreased greatly with the increase of water diversion from rivers and/or reservoir regulation,
Song-hao Shang, Xiao-min Mao
doaj   +1 more source

An Inverse Piecewise Flow Curve Determination Method for Torsion Tests at Elevated Temperature

Metals
This paper presents an extended method for determining flow curves under shear loading using torsion tests, a technique often used to characterize plastic behavior in metal forming.
Aditya Vuppala, Holger Brüggemann, David Bailly, Emad Scharifi   +3 more
doaj   +1 more source

Estimation of Groundwater Recharge in the Lobo Catchment (Central-Western Region of Côte d’Ivoire)

Hydrology, 2022
Determination of groundwater recharge is a major challenge in areas where rainfall is generally abundant. Variability and uncertainty are inherent in the estimation of recharge, and several methods are therefore recommended for its estimation at a ...
Kouadio Kouamé Jean Olivier, Dibi Brou, Mangoua oi Mangoua Jules, Eblin Sampah Georges, Paran Frédéric, Graillot Didier   +5 more
doaj   +1 more source

Modeling of Tensile Tests Flow Curves Using an Explicit Piecewise Inverse Approach

Metals
Tensile tests are a common method for characterizing plastic behavior for sheet metal forming applications. During tensile testing at the beginning of the deformation, the stress state is uniaxial; however, as the deformation proceeds, the state changes ...
Aditya Vuppala, Holger Brüggemann, David Bailly, Emad Scharifi   +3 more
doaj   +1 more source

Determinação espectrofotométrica de cloreto em cimento após preparo de amostra por piroidrólise

Química Nova, 2013
A method based on pyrohydrolysis was proposed for cement sample preparation and further chloride determination by spectrophotometry using flow injection analysis.
Fabio A. Duarte, Ederson R. Pereira, Eder L. M. Flores, Edson I. Muller, Erico M. M. Flores, Valderi L. Dressler   +5 more
doaj   +1 more source

The construction of the flow duration curve and the regionalization parameters analysis in the northwest of China

Journal of Water and Climate Change, 2021
Daily runoff is the data to estimate the water resources in a river. In many catchments, the daily discharge is not well observed. Flow duration curve is an important characteristic of daily runoff, and important for the design of water conservancy ...
Jinkai Luan, Dengfeng Liu, Mu Lin, Qiang Huang   +3 more
doaj   +1 more source

A Proposal of a Constitutive Description for Aluminium Alloys in Both Cold and Hot Working

Metals, 2016
The most important difficulties when the behaviour of a part that is subjected to external mechanical forces is simulated deal with the determination of both the material thermo-mechanical properties and its boundary conditions.
Javier León, Carmelo J. Luis, Juan P. Fuertes, Ignacio Puertas, Rodrigo Luri, Daniel Salcedo   +5 more
doaj   +1 more source

Spectrophotometric flow injection procedure to indirect determination of paracetamol in pharmaceutical formulations using o-tolidine as reagent

Eclética Química, 2018
A spectrophotometric flow injection method for the determination of paracetamol in pharmaceutical formulations is proposed. The procedure was based on the oxidation of paracetamol by sodium hypochloride and the determination of the excess of this oxidant
Orlando Fatibello-Filho, Heberth Juliano Vieira   +1 more
doaj   +1 more source

Low-flow discharge deficits assessment, applying constant and variable low-flow threshold levels, as illustrated with the example of selected catchments in the Vistula river basin [PDF]

Acta Scientiarum Polonorum. Formatio Circumiectus, 2018
In the present study, we have assessed low-flow discharge deficits, and the characteristics of the low flows at a constant and variable (monthly) low-flow threshold.
Edmund Tomaszewski
doaj   +1 more source