Results 261 to 270 of about 862,515 (311)
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Numerische Mathematik, 1999
All particle methods produce large vacuum regions when they are applied, for example, to a free gas flow. This difficulty can be avoided, however, by allowing the particles adapt their size to the local state of the fluid [the author, Numer. Math. 76, No. 1, 87-109 (1997; Zbl 0876.76067)]. This method is described in the present article in detail.
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All particle methods produce large vacuum regions when they are applied, for example, to a free gas flow. This difficulty can be avoided, however, by allowing the particles adapt their size to the local state of the fluid [the author, Numer. Math. 76, No. 1, 87-109 (1997; Zbl 0876.76067)]. This method is described in the present article in detail.
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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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Particle Size and Content Uniformity
Pharmaceutical Research, 1990The requirements of the USP Content Uniformity test are translated into physical and mathematical parameters. Assuming spherical particle sizes with a log normal distribution, the mean particle size and particle size distribution required to insure a high probability of passing the content uniformity test are calculated.
S H, Yalkowsky, S, Bolton
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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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Nitrofurantoin: Particle Size and Dissolution
Drug Development and Industrial Pharmacy, 1999Tablets manufactured from micronized anhydrous nitrofurantoin exhibited unsatisfactory dissolution properties, whereas excellent results were obtained with unmilled drug material having fine particle size.
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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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Deconvolution of the Particle Size Effect on CO2 Hydrogenation over Iron-Based Catalysts
ACS Catalysis, 2020Guanghui Zhang, Xinwen Guo, Jie Zhu
exaly