To examine colloid transport in geochemically heterogeneous porous media at a scale comparable to field experiments, we monitored the migration of silica-coated zirconia colloids in a two-dimensional layered porous media containing sand coated to three different extents by ferric oxyhydroxides. Transport of the colloids was measured over 1.65 m and 95 days. Colloid transport was modeled by an a...

Rat kidney endothelial cell morphology was examined after introducing iron colloid particles of positive or negative charge to investigate the relationship between the electric charge and permeation through the glomerular capillary. The kidneys were first perfused with Hanks’ solution through the renal arteries and then with iron colloid particles of positive or negative charge. The iron colloi...

addressing controversies regarding colloid solution carrier fl uids [1]. Instead of off ering a balanced view, however, the article focused on the refutation of dilutional hyperchloraemic acidosis, depicting it as a clinically innocent inevitability we should accept rather than try to avoid. Th e authors initially forward the view that ‘unless recommendations are based on high quality primary r...

After reading this volume one is left with the distinct impression that it was written by a missionary, one who feels very strongly that nearly all chemists and biologists have an entirely wrong concept of the fundamental nature of the lyophilic colloid. At all events, the whole organization of the book is an argument for the author's point of view, which, although it has undoubtedly been overl...

In this review article are studied the methods for preparation of micro dispersed colloid silver nanoparticles and scopes of their practical application in nano-industry, bionanotechnology, medicine and allied industries, including water processing and water purification techniques. The mechanisms of bactericidal influence of colloid silver on a microbial cell are discussed from the point of vi...

Introduction In the past year there has been an escalation of the age-old crystalloid–colloid debate as a result of the publication of several systematic reviews assessing the effect of various colloids versus various crystalloids on mortality. In 1998, an excess mortality of 4% for the colloid resuscitated patients was claimed for various colloids versus various crystalloids in various clinica...

A common approach to complex systems such as colloidal suspensions or polymer solutions describes the mesoscopic behavior using effective interactions. These potentials act between the macromolecular entities and can be derived by integrating out the microscopic degrees of freedom. The remaining macroparticle coordinates need to be chosen a priori. Two obvious choices are (i) the centers of mas...

Transport of colloids with transient wetting fronts represents an important mechanism of contaminant migration in the vadose zone. The work presented here used steady-state saturated and transient unsaturated flow columns to evaluate the transport of a fluorescent latex microsphere (980 nm in diameter) with capillary wetting fronts of different solution surface tensions and ionic strengths. The...