scholarly journals Determination of Solid Particle Concentration at coal Transshipment site

2009 ◽  
Vol 3 (3) ◽  
Author(s):  
K. Siliņš ◽  
A. Žandeckis ◽  
S. Valtere
Keyword(s):  
Solid Particle ◽  
Particle Concentration

Determination of particle concentration in latexes by turbidimetry

1993 ◽  
Vol 90 (3) ◽  
pp. R9-R12 ◽  
Author(s):  
J.M. Irache ◽  
C. Durrer ◽  
G. Ponchel ◽  
D. Duchêne
Keyword(s):  
Particle Concentration

scholarly journals Determination of kinematic indices corresponding to a solid particle on a flat oscillating surface

2016 ◽  
Vol 147 ◽  
pp. 012151
Author(s):  
E Mosnegutu ◽  
V Nedeff ◽  
O Bontas ◽  
N Barsan ◽  
D Chitimus ◽  
...  
Keyword(s):  
Solid Particle

scholarly journals Quantitative Imaging of the Iron-Oxide Nanoparticle- Concentration for Magnetic Drug Targeting Employing Inverse Magnetomotive Ultrasound

2019 ◽  
Vol 5 (1) ◽  
pp. 417-419 ◽  
Author(s):  
Michael Fink ◽  
Stefan Lyer ◽  
Christoph Alexiou ◽  
Stefan J. Rupitsch ◽  
Helmut Ermert
Keyword(s):  
Drug Targeting ◽  
Magnetic Nanoparticle ◽  
Particle Concentration ◽  
Quantitative Imaging ◽  
Simulated Data ◽  
Magnetic Drug Targeting ◽  
Iron Oxide Nanoparticle ◽  
Order Of Magnitude ◽  
Oxide Nanoparticle

AbstractMagnetomotive Ultrasound is an imaging technique that is capable to detect tissue, which is perfused by magnetic nanoparticles. However, this modality is restricted to qualitative imaging only. Therefore, we present an extended Magnetomotive Ultrasound algorithm, which allows the quantitative determination of the spatial distribution of magnetic nanoparticle density in tissue. The algorithm is based on an iterative adjustment of simulated data to measurements. Experiments with tissue-mimicking phantoms reveal that the presented method leads to the spatial particle concentration in the correct order of magnitude.

scholarly journals Ultrasonic determination of the particle concentration in model suspensions and ice slurry

2011 ◽  
Vol 34 (8) ◽  
pp. 1972-1979 ◽  
Author(s):  
V. Langlois ◽  
W. Gautherin ◽  
J. Laurent ◽  
L. Royon ◽  
L. Fournaison ◽  
...  
Keyword(s):  
Particle Concentration ◽  
Ice Slurry ◽  
Ultrasonic Determination

Localized Particle Concentration Measurement in Slurry Flows Using A-Scan Ultrasound Technique

2009 ◽  
Author(s):  
John M. Furlan ◽  
Venkat Mundla ◽  
Jaikrishnan Kadambi ◽  
Nathaniel Hoyt ◽  
Robert Visintainer ◽  
...  
Keyword(s):  
Solid Particle ◽  
Particle Concentration ◽  
Volume Fraction ◽  
Computational Study ◽  
Solid Particles ◽  
Acoustic Properties ◽  
Imaging Method ◽  
Concentration Profiles ◽  
Calibration Data ◽  
Slurry Flows

In the design of slurry transport equipment, the effects of solid particle concentration on hydraulic performance and wear have to be considered. This study involves examining the acoustic properties of slurry flows such as velocity, backscatter and attenuation as a function of volume fraction of solid particles. Ultrasound A-mode imaging method is developed to obtain particle concentration in a flow of soda lime glass particles (diameter of 200 micron) and water slurry in a 1″ diameter pipe. Based on the acoustic properties of the slurry a technique is developed to measure local solid particle concentrations. The technique is used to obtain concentration profiles in homogeneous (vertical flow) and non-homogeneous (horizontal flow) slurry flows with solid particle concentrations ranging from 1–10% by volume. The algorithm developed utilizes the power spectrum and attenuation measurements obtained from the homogeneous loop as calibration data in order to obtain concentration profiles in other (i.e. non-homogenous) flow regimes. A computational study using FLUENT was performed and a comparison is made with the experimental results. A reasonable agreement between the experimental and computational results is observed.

scholarly journals Features of Sizing and Enumeration of Silica and Polystyrene Nanoparticles by Nanoparticle Tracking Analysis (NTA)

Sensors ◽  
2020 ◽  
Vol 20 (22) ◽  
pp. 6611
Author(s):  
Zohair Usfoor ◽  
Katharina Kaufmann ◽  
Al Shahriar Hossain Rakib ◽  
Roland Hergenröder ◽  
Victoria Shpacovitch
Keyword(s):  
Electron Microscopy ◽  
Particle Size ◽  
Particle Concentration ◽  
Refractive Indices ◽  
Nanoparticle Tracking Analysis ◽  
Polystyrene Nanoparticles ◽  
Transmission Electron ◽  
Concentration Measurements ◽  
Scanning Electron

Nanoparticle Tracking Analysis (NTA) allows for the simultaneous determination of both size and concentration of nanoparticles in a sample. This study investigates the accuracy of particle size and concentration measurements performed on an LM10 device. For experiments, standard nanoparticles of different sizes composed of two materials with different refractive indices were used. Particle size measurements were found to have a decent degree of accuracy. This fact was verified by the manufacturer-reported particle size—determined by transmission electron microscopy (TEM)—as well as by performed scanning electron microscopy (SEM) measurements. On the other hand, concentration measurements resulted in overestimation of the particle concentration in majority of cases. Thus, our findings confirmed the accuracy of nanoparticle sizing performed by the LM10 instrument and highlighted the overestimation of particle concentration made by this device. In addition, an approach of swift correction of the results of concentration measurements received for samples is suggested in the presented study.

Cathode-Region Method for the Direct Spectrochemical Determination of 50 Trace Elements in Rock Phosphate

1969 ◽  
Vol 23 (5) ◽  
pp. 483-489 ◽  
Author(s):  
R. Avni ◽  
A. Boukobza
Keyword(s):  
Trace Elements ◽  
Atmospheric Pressure ◽  
Particle Concentration ◽  
Rock Phosphate ◽  
Cathode Region ◽  
Arc Plasma ◽  
Average Precision ◽  
Voltage Electron ◽  
Dc Arc

A direct spectrochemical method for 50 trace elements in rock phosphate was developed, exposing only the cathode region (0.5 and 0.8 mm below the upper electrode) instead of the whole dc arc plasma. In the 0.5-mm region 31 elements were analyzed, while the 0.8-mm region was used for Sc, Y, U, Th, Zr, and the rare earths. The axial gradients of the dc arc, burning in air under atmospheric pressure, were studied in order to find the suitable matrix for the trace element standards. The behavior of the temperature, voltage, electron density, line intensity, and particle concentration indicate calcium metaphosphate as suitable matrix for rock phosphate. When 20% by weight graphite was added to both, standards and samples, the detection limits of the traces was in the range of 0.1–10 ppm. An average precision of 20% was calculated for concentrations up to 400 ppm.

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