منابع مشابه
Mechanics and Microstructures of Concentrated Particle Gels
It is often assumed that the viscoelastic properties of dense colloids are determined by the colloid volume fraction, the interaction potential, as well as the particle size distribution and shape. The dependence of the viscoelastic behavior of particle suspensions and gels on these parameters has been widely studied, and is well understood in many cases. In contrast, our knowledge on the influ...
متن کاملThe Structure of Protoplasm and of Inorganic Gels: an Analogy.*
SCHALEK and Szegvary, and Svedberg, have recently described remarkable instances of sudden liquefaction of inorganic colloidal gels which have a striking analogy in the collapse of the gel structure of the protoplasm of a dividing echinoderm egg when the latter is subjected to mechanical pressure. It is the purpose of this paper to call attention to this analogy. Regional Changes in Protoplasmi...
متن کاملInorganic particle content of foods and drugs
Inorganic particulate matter in foods and drugs is discussed from the standpoint of determination by optical microscopy, source, and regulatory significance. Some particulate matter may be generated as extraneous material and traced to specific operational practices during processing and production with excessive levels associated with deficiencies in good manufacturing practices. Other particl...
متن کاملInorganic particle analysis of dental impression elastomers.
The aim of this study was to determine quantitatively and qualitatively the inorganic particle fraction of commercially available dental elastomers. The inorganic volumetric fraction of two addition silicones (Reprosil Putty/Fluid and Flexitime Easy Putty/Fluid), three condensation silicones (Clonage Putty/Fluid, Optosil Confort/Xantopren VL and Silon APS Putty/Fluid), one polyether (Impregum S...
متن کاملPerformance Evaluation of Viscosity Characteristics of Enhanced Preformed Particle Gels (PPGs)
Preformed Particle Gels (PPGs) treatment is one of the most promising solutions to improve conformance control in mature water flooded oil reservoirs. It is very important to be able to evaluate and predict performance of PPGs in porous media. In this paper, we will first introduce new class of enhanced PPGs designed for harsh reservoir conditions (high salinity and temperature) and then pr...
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ژورنال
عنوان ژورنال: Current Opinion in Colloid & Interface Science
سال: 1996
ISSN: 1359-0294
DOI: 10.1016/s1359-0294(96)80073-2