Milia en plaque (MEP) is an uncommon disorder characterized by an erythematous plaque containing numerous milia. The pathogenesis of MEP is not clear. The authors report a man with an erythematous plaque on the right retroauricular area, containing numerous white-yellow cysts varying in size. Histological examination showed that multiple cystic structures at various levels of the dermis that we...

– We investigate the structure of colloid-polymer mixtures by calculating the structure factors for the Asakura-Oosawa model in the PY approximation. We discuss the role of potential range, polymer concentration and polymer-polymer interactions on the colloid-colloid structure. Our results compare reasonably well with the recent experiments of Moussäıd et al. (Moussäid A., Poon W. C. K., Pusey ...

HYPOTHESIS Subareolar or periareolar injection of radioactive technetium sulfur colloid is equivalent to other injection techniques for breast cancer sentinel lymph node (SLN) biopsy. DESIGN AND SETTING Prospective, multicenter clinical trial. PATIENTS A total of 3961 individuals with clinical stage I and II breast cancer. INTERVENTIONS All patients underwent attempted SLN biopsy followed...

In the article the equations of a kinetics of coagulation of disperse systems and theory of a solvate layer of colloidal particles are given. 1. KINETIC EQUATION of COAGULATION The particles of colloids and suspensions in relation to molecules are macroobjects, and in matching with customary macroobjects have the microscopic sizes, i.e. take an intermediate standing in scale hierarchy. At the s...

Crack-free monolithic gels were prepared from different mixtures of colloidal silica with a sol solution containing tetraethoxysilane, under powerful ultrasonic agitation (sonosol). Recently, information on the structure of these gels, inferred from N2 adsorption and mercury intrusion porosimetry, was presented. In the present paper, these data were used to construct structural models of the ge...

The deposition and re-entrainment behaviors of carboxylate-modified latex microspheres (0.2-, 0.5-, 1.0-, and 2.0-microm diameter) were examined in an impinging jet system on both glass and quartz substrata under a variety of environmentally relevant fluid velocities (2.12 x 10(-4) to 1.06 x 10(-3) m sec(-1)) in both the absence and the presence of an energy barrier to deposition. In the absenc...

Rat thyroid lobes incubated with mannose-(3)H, galactose-(3)H, or leucine-(3)H, were studied by radioautography. With leucine-(3)H and mannose-(3)H, the grain reaction observed in the light microscope is distributed diffusely over the cells at 5 min, with no reaction over the colloid. Later, the grains are concentrated towards the apex, and colloid reactions begin to appear by 2 hr. With galact...

Colloids may have an important role in regulating the structure and function of groundwater ecosystems, and may influence the migration of low solubility contaminants in groundwater. There is, however, a degree of uncertainty about how colloids behave under the variable hydrogeochemical and hydrodynamic conditions that occur during managed aquifer recharge. We used an online monitoring system t...