Results 221 to 230 of about 388,808 (259)

Concentration and size distribution of particles in abstracted groundwater

Water Research, 2010
Particle number concentrations have been counted and particle size distributions calculated in groundwater derived by abstraction wells. Both concentration and size distribution are governed by the discharge rate: the higher this rate the higher the concentration and the higher the proportion of larger particles.
Van Beek, C.G.E.M., de Zwart, A.H., Balemans, M., Kooiman, J.W., van Rosmalen, C., Timmer, H., Vandersluys, J., Stuijfzand, P.J.   +7 more
openaire   +3 more sources

Particle Size Distribution

2007
D Kroetsch, C Wang
  +5 more sources

Estimating Functionals of Particle Size Distributions

Biometrika, 1971
SUMMARY Data consisting of the intersections of a planar or linear probe with a field of spheres, with a diameter distribution G(x), is often used to estimate linear functionals or their ratios. It is shown that distribution-free estimators may be poor and that their distribution, even in large samples, depends on knowledge of G for small x that may be
openaire   +2 more sources

The Size and Size Distribution of Fog Particles

Physics, 1932
An apparatus for the microscopic measurement of fog particles is described. The particles were collected on a slightly greased glass slide and viewed with the aid of dark-field illumination. The particle sizes were measured either visually with an eyepiece micrometer or, more usually, by the subsequent measurement of photomicrographs.
openaire   +1 more source

Technegas: particle size and distribution

European Journal of Nuclear Medicine, 1994
W. M. Burch, M. M. Boyd, D. E. Crellin, M. Lemb, T. H. Oei, H. Eifert, B. G�nther   +6 more
openaire   +2 more sources

Particle and pore size distributions of investments

Journal of Oral Rehabilitation, 1986
SummaryThe particle‐size distributions of investment powders and the pore‐size distributions of set‐fired investments were investigated by electrozone size analysis, and by mercury intrusion scanning porosimetry, respectively, for a number of different investments, representing all three types available, namely: the gypsum‐, phosphate‐ and silicate ...
openaire   +2 more sources

Determination of the size distribution of nanometer-sized particles

Journal of Aerosol Science, 1996
D. Hummes, S. Neumann, F. Schmidt, M. Drötboom, H. Fissan, K. Deppert, T. Junno, J.-O. Malm, L. Samuelson   +8 more
openaire   +2 more sources

Particle Size, Size Distributions and Shape

2009
Only for spheres, the size of a particle can be represented by a single parameter, being e.g., its diameter. For the description of a particle of any other shape more parameters are required. Many different descriptors exist. They can be directly related to visual or microscopic measurement, such as length or breadth, or they are based on the concept ...
openaire   +1 more source

Characterizing Particle Size and Size Distribution

2012
CHARACTERIZING THE SHAPE, SIZE AND SIZE-distribution of particles that go into liquid paint or coating formulations as well as dry formulated powdered coatings are very important. These materials may vary from being ground mineral fillers to crystalline epoxy cross-linkers and catalysists used in finished powdered paint products. There is a significant
openaire   +1 more source

Deconvolution of the Particle Size Effect on CO2 Hydrogenation over Iron-Based Catalysts

ACS Catalysis, 2020
Jie Zhu, Guanghui Zhang, Wenhui Li
exaly