Results 41 to 50 of about 1,467,838 (296)
Particle Size Distribution [PDF]
Analytical Chemistry, 1987 Complementing ACS Symposium Series No. 332, Particle Size Distribution, this volume is a compendium of the current work in the field and features the latest technology now in use for particle size distribution assessment. Among the new techniques discussed are capillary hydrodynamic fractionation, field flow fractionation, disc centrifuge ...
openaire +2 more sources
Influence of Particle Size Distribution on Random Close Packing
, 2013 The densest amorphous packing of rigid particles is known as random close packing. It has long been appreciated that higher densities are achieved by using collections of particles with a variety of sizes.
Desmond, Kenneth W., Weeks, Eric R.
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In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS
FEBS Letters, EarlyView.We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka +11 more
wiley +1 more source
Impact of Particle Size Distribution of Colloidal Particles on Contaminant Transport in Porous Media
Applied Sciences, 2019 The presence of retained colloidal particles causes the retardation of contaminant transport when the contaminant is favorably adsorbed to colloidal particles. Although the particle size distribution affects the retention behavior of colloidal particles,
Jongmuk Won +4 more
doaj +1 more source
Study on Particle Size of Coal Sample Measured by Dynamic Image Method
Meikuang Anquan, 2020 Coal samples from Hexing Coal Mine in Yunnan Province were selected and 8 samples from 1 mm to 3 mm were measured by dynamic image method, each of which was 20 g.
LONG Qingming
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Direct indication of particle size in fluidized beds [PDF]
, 1969 Differential pressure measurements indicate particle size and particle size distribution in fluidized beds. The technique is based on the relationship between bed particle size and the intensity and frequency of fluctuations.
Knudsen, I. E., Olsen, W. F.
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Pair distribution function and structure factor of spherical particles
, 2006 The availability of neutron spallation-source instruments that provide total scattering powder diffraction has led to an increased application of real-space structure analysis using the pair distribution function.
A. Guinier +8 more
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FEBS Letters, EarlyView.The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li +2 more
wiley +1 more source
FEBS Letters, EarlyView.We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee +3 more
wiley +1 more source
Structural biology of ferritin nanocages
FEBS Letters, EarlyView.Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley +1 more source