Results 291 to 300 of about 2,195,420 (349)
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Applied Optics, 1971
A particle size analyzer using a gas laser as a source of coherent light crossing a sample is described. The particle size distribution is calculated from intensity variations within the diffraction pattern at infinity.
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A particle size analyzer using a gas laser as a source of coherent light crossing a sample is described. The particle size distribution is calculated from intensity variations within the diffraction pattern at infinity.
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Nature, 1948
I HAVE recently had occasion to devise a scheme for measuring the mean diameters of the particles of a powder. The method finally evolved has not been discovered during an examination of the available literature, and in view of its simplicity seems to merit description.
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I HAVE recently had occasion to devise a scheme for measuring the mean diameters of the particles of a powder. The method finally evolved has not been discovered during an examination of the available literature, and in view of its simplicity seems to merit description.
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Annual Technical Meeting, 1990
Abstract The particle size of Class G oilwell cement has been responsible for limiting its use in specific remedial cementing operations since the largest particles in a typical Class G cement are in the 100–150 micron range, cement slurries will not penetrate fractures narrower than about 0.4 millimeters (400 ...
D. P. Ewert +2 more
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Abstract The particle size of Class G oilwell cement has been responsible for limiting its use in specific remedial cementing operations since the largest particles in a typical Class G cement are in the 100–150 micron range, cement slurries will not penetrate fractures narrower than about 0.4 millimeters (400 ...
D. P. Ewert +2 more
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Particle Sizes from Sectional Data
Biometrics, 2009Summary We propose a new statistical method for obtaining information about particle size distributions from sectional data without specific assumptions about particle shape. The method utilizes recent advances in local stereology. We show how to estimate separately from sectional data the variance due to the local stereological estimation procedure ...
Pawlas, Zbynek +2 more
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Simplified Particle-size Calculations
Nature, 1954PARTICLE-SIZE analysis by microscopical methods provides large samples of measurements which then need numerical analysis to give estimates of average diameters, specific surface, etc. When, as is often the case, particle sizes are log-normally distributed1–4, tedious summation of powers of the sizes can be avoided if the cumulative distribution is ...
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1991
The particle size technique described in Chapter 13 combines gravitational sedimentation with the detection of X-ray absorption by a homogeneous suspension of particles. Fig. 23.1 is a schematic diagram of the X-ray sedimentometer shown in Fig. 23.2.
S. Lowell, Joan E. Shields
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The particle size technique described in Chapter 13 combines gravitational sedimentation with the detection of X-ray absorption by a homogeneous suspension of particles. Fig. 23.1 is a schematic diagram of the X-ray sedimentometer shown in Fig. 23.2.
S. Lowell, Joan E. Shields
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Particle Size and Size Distribution
2015Abstract Particle size and size distribution have a significant effect on the behavior of metal powders during their processing. This article provides an overview of the sample preparation process for particle size measurement, which is a key step in the measurement of particle size distributions.
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1994
Particle size reduction (or grinding) cannot be looked at in isolation from the other stages of the chocolate masse manufacturing process. The particle size reduction process chosen depends upon the processes which both precede and succeed it, and affects both the economic viability of the chocolate manufacturingprocess and the final quality of the ...
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Particle size reduction (or grinding) cannot be looked at in isolation from the other stages of the chocolate masse manufacturing process. The particle size reduction process chosen depends upon the processes which both precede and succeed it, and affects both the economic viability of the chocolate manufacturingprocess and the final quality of the ...
openaire +1 more source