منابع مشابه
Formation Mechanisms of Uniform Colloid Particles*
The relationship of the shape and structure of uniform colloidal particles to different mechanisms of formation by precipitation in homogeneous solutions is reviewed. Specifically, conditions leading to (a) amorphous spheres, (b) nonspherical crystals of different shapes, and (c) polycrystalline particles of different morphologies including spheres are distinguished. The last case is observed w...
متن کاملSize- and surface-dependent uptake of colloid particles into the lymphatic system.
PURPOSE To examine the effect of particle size and surface characteristics on colloidal particle uptake from subcutaneous tissue into the lymphatic system. MATERIALS AND METHODS Perfluorocarbon emulsion ZY13163 (median particle diameter, 0.08 micron; surfactant, egg yolk phospholipid), ZY13164 (median particle diameter, 0.36 micron; surfactant, egg yolk phospholipid), ZY13199 (0.18 micron, su...
متن کاملOptimized mammary lymphoscintigraphy using larger colloid particles.
TO THE EDITOR: In their very interesting article on mammary lymphoscintigraphy, Valdés Olmos et al. (1) report on applying a single intratumoral injection for sentinel lymph node (SLN) identification. Only patients with an operable, palpable breast tumor were included in the study. The authors used 99mTclabeled nanocolloid with a particle size of ,80 nm. During the first 30 min, two to eight no...
متن کاملDistribution of Colloid Particles onto Interfaces in Partially Saturated Sand
Colloids have long been known to facilitate the transport of contaminants in soils, but few direct observations have been made of transport and retention in unsaturated porous media. Studies have typically been limited to evaluation of column breakthrough curves, resulting in differing and sometimes conflicting proposed retention mechanisms. We carried out pore scale visualization studies of co...
متن کاملFabrication of asymmetrically coated colloid particles by microcontact printing techniques
We developed a novel method for preparation of asymmetrically coated colloid particles by using a microcontact printing technique. Films of water-insoluble ionic surfactants deposited on PDMS stamps were printed onto latex particle monolayers of opposite surface charge in order to produce spherical latex particles of dipolar surface charge distribution. We studied the effects of salt on the agg...
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ژورنال
عنوان ژورنال: Journal of Dairy Science
سال: 1959
ISSN: 0022-0302
DOI: 10.3168/jds.s0022-0302(59)90652-6