scholarly journals DETERMINATION OF THE ANGLE OF SELECTIVE WETTING OF POLYDISPERSE ISOMORPHIC SOLID PARTICLES

2019 ◽  
pp. 13-17
Author(s):  
A.V. Nushtaeva
Keyword(s):  
Solid Particles ◽  
Selective Wetting

scholarly journals Determination of macro-scale soil properties from pore-scale structures: model derivation

2018 ◽  
Vol 474 (2209) ◽  
pp. 20170141 ◽  
Author(s):  
K. R. Daly ◽  
T. Roose
Keyword(s):  
Pore Space ◽  
Solid Particles ◽  
Underlying Structure ◽  
Pore Scale ◽  
Homogenization Procedure ◽  
Macro Scale ◽  
Model Derivation ◽  
Scale Structures ◽  
Homogenization Scheme

In this paper, we use homogenization to derive a set of macro-scale poro-elastic equations for soils composed of rigid solid particles, air-filled pore space and a poro-elastic mixed phase. We consider the derivation in the limit of large deformation and show that by solving representative problems on the micro-scale we can parametrize the macro-scale equations. To validate the homogenization procedure, we compare the predictions of the homogenized equations with those of the full equations for a range of different geometries and material properties. We show that the results differ by ≲ 2 % for all cases considered. The success of the homogenization scheme means that it can be used to determine the macro-scale poro-elastic properties of soils from the underlying structure. Hence, it will prove a valuable tool in both characterization and optimization.

Experimental Determination of Statistical Properties of Two-Phase Turbulent Motion

1960 ◽  
Vol 82 (3) ◽  
pp. 609-621 ◽  
Author(s):  
S. L. Soo ◽  
H. K. Ihrig ◽  
A. F. El Kouh
Keyword(s):  
Gas Phase ◽  
Tracer Diffusion ◽  
Statistical Properties ◽  
Solid Particles ◽  
Turbulent Motion ◽  
Two Phase ◽  
Gaseous State ◽  
Diffusion Technique ◽  
And Diffusion

Experimental methods for the determination of certain statistical properties of turbulent conveyance and diffusion of solid particles in a gaseous state are presented. Methods include a tracer-diffusion technique for the determination of gas-phase turbulent motion and a photo-optical technique for the determination of motion of solid particles. Results are discussed and compared with previous analytical results.

scholarly journals DETERMINATION OF THE REAL VALUES OF KINEMATIC INDEX CORRESPONDING TO THE MECHANICAL SEPARATION PROCESS

2017 ◽  
Vol 22 (2) ◽  
Author(s):  
EMILIAN MOȘNEGUȚU ◽  
VALENTIN NEDEFF ◽  
MIRELA PANAINTE-LEHĂDUȘ ◽  
NARCIS BÂRSAN ◽  
DANA CHIȚIMUȘ ◽  
...  
Keyword(s):  
Separation Process ◽  
Experimental Batch ◽  
Solid Particles ◽  
Common Method ◽  
The Real ◽  
Mechanical Separation

This article presents the methodology for determining the real values of kinematic indices which characterizes the mechanical separation of a mixture of solid particles. Mechanical separation of a mixture of solid-solid on surface provided with holes is the most common method of separation. To optimize equipment that performs this operation, both theoretical and practical characteristics are determined. Kinematic indices are part of the theoretical characteristics, helping to identify behavior of solid particles on a surface flat swing. Starting from an experimental batch, real values of the kinematic indices corresponding to up, down and sideways movement on the sieve were determined for the following types of real particles: grain, large grain beans, small grain beans and soybeans.

Light Transmission Model for Determination of the Refractive Index of Solid Particles in Suspensions: An Immersion Study

2011 ◽  
Vol 65 (5) ◽  
pp. 557-560 ◽  
Author(s):  
Jukka Räty ◽  
Ilpo Niskanen ◽  
Risto Myllylä ◽  
Kai-Erik Peiponen
Keyword(s):  
Refractive Index ◽  
Light Transmission ◽  
Solid Particles ◽  
Transmission Model

Determination of the Residence Time Distribution of Solid Particles by a Photometric Method

1998 ◽  
Vol 76 (5) ◽  
pp. 643-648 ◽  
Author(s):  
K.M. Allal ◽  
J.C. Dolignier ◽  
G. Martin
Keyword(s):  
Residence Time ◽  
Time Distribution ◽  
Residence Time Distribution ◽  
Solid Particles ◽  
Photometric Method

A Method for Rapid Determination of Moisture-Adsorption Isotherms of Solid Particles

1965 ◽  
Vol 30 (1) ◽  
pp. 105-110 ◽  
Author(s):  
C. GUR-ARIEH ◽  
A. I. NELSON ◽  
M. P. STEINBERG ◽  
L. S. WEI
Keyword(s):  
Adsorption Isotherms ◽  
Rapid Determination ◽  
Solid Particles ◽  
Moisture Adsorption

Design and Development of Microparticulate Drug Delivery System of Hydrochlorothiazide

1970 ◽  
Vol 9 (3) ◽  
pp. 3282-3286
Author(s):  
S.S. Sakhare ◽  
A.K. Mali
Keyword(s):  
Drug Delivery ◽  
Solid Particles ◽  
In Vitro Dissolution ◽  
Uniform Size ◽  
Dissolution Properties ◽  
Particle Size Determination ◽  
Evaporation Technique ◽  
Novel Drug

Microparticles open up new vistas of research in the development of novel drug delivery systems. Microparticles are defined as particulate dispersions or solid particles with size range of 1-1000 µm.  Hydrochlorothiazide (HCT), diuretic drug, is practically insoluble in water and has a solubility of 250µg/mL in 0.1 N HCl (25 °C). Presently, the improvement of drug solubility is one of the most challenging fields in pharmaceutical development, therefore, we choose hydrochlorothiazide for the micro-particulate drug delivery. Microparticles of hydrochlorothiazide were prepared by solvent evaporation technique. The prepared microparticles were evaluated for various properties. Particle size determination of microparticles by optical microscopy showed uniform size distribution. The in vitro dissolution studies of hydrochlorothiazide microparticles showed better release effect (99.45%) over a period of 60 min as compared to pure drug. Thus a successful attempt was made to formulate microparticles of this BCS class II drug which resulted in increase in dissolution properties of hydrochlorothiazide microparticles.

COMPACTION OF LINEAR ELASTIC-CREEPING INHOMOGENEOUS SOILS

2021 ◽  
pp. 45-50
Author(s):  
А. Дасибеков ◽  
Ж. Т. Айменов ◽  
Б. Арапов ◽  
Д. С. Мырзалиев
Keyword(s):  
Solid Particles ◽  
Independent Variables ◽  
Linear Elastic ◽  
Compressive Stresses ◽  
Porosity Coefficient ◽  
Soil Skeleton ◽  
Soil Compression ◽  
Straight Lines

В данной работе рассмотрен процесс уплотнения линейных упругоползучих неоднородных грунтов. Областью изменения независимых переменных является прямоугольник, образованный прямыми х=±ℓ; y=0; y=h. Уплотнение этого прямоугольника безусловно определяется своей сжимаемостью. Сжимаемость основания зависит как от типа грунта, так и от характера нагрузки. При этом деформация сжатия грунтов в основном происходит вследствие сближения твердых частиц между собой и оценивается изменением коэффициента пористости при изменении сжимающих напряжений в скелете грунта. Определение этой зависимости обычно производится лабораторным путем в компрессионных приборах. In this paper, the process of compaction of linear elastic-creeping inhomogeneous soils is considered. The domain of change of independent variables is a rectangle formed by straight lines x = ±l; y = 0; y = h. the Compaction of this rectangle is unconditionally determined by its compressibility. Compressibility of the base depends on both the type of soil and the nature of the load. In this case, the deformation of soil compression mainly occurs due to the convergence of solid particles with each other and is estimated by changing the porosity coefficient when compressive stresses in the soil skeleton change. The determination of this dependence is usually made by laboratory means in compression devices.

Determination of flow velocities causing blowing and movement of solid particles

1987 ◽  
Vol 27 (6) ◽  
pp. 855-860 ◽  
Author(s):  
A. Azizov ◽  
V. R. Toshov
Keyword(s):  
Solid Particles ◽  
Flow Velocities
Sign in / Sign up

Export Citation Format

Share Document