Monte Carlo simulations of the Asakura-Oosawa model for colloid-polymer mixtures confined between two parallel repulsive structureless walls are presented and analyzed in the light of current theories on capillary condensation and interface localization transitions. Choosing a polymer-to-colloid size ratio of q=0.8 and studying ultrathin films in the range of D=3 to D=10 colloid diameters thick...

Our recent study reported that conformation change of granule-associated Bovine Serum Albumin (BSA) may influence the role of the protein controlling colloid deposition in porous media (Flynn et al., 2012). The present study conceptualized the observed phenomena with an ellipsoid morphology model, describing BSA as an ellipsoid taking a side-on or end-on conformation on granular surface, and id...

Colloidal adhesion to membrane surfaces is an important parameter in determining membrane fouling propensity and in optimizing membrane cleaning strategies. It has previously been demonstrated that acid–base interactions can significantly affect colloid–membrane interaction as a colloid approaches a membrane surface, however, the effect of acid–base interactions on adhesion has received less at...

Saturated packed column and micromodel transport studies were conducted to gain insight on mechanisms of colloid retention and release under unfavorable attachment conditions. The initial deposition of colloids in porous media was found to be a strongly coupled process that depended on solution chemistry and pore space geometry. During steady state chemical conditions, colloid deposition was no...

Electron paramagnetic resonance (EPR) was used to study the colloidal structure of model wood extractive colloids composed of a resin acid (abietic acid), a fatty acid (oleic acid) and a triglyceride (triolein). Two nitroxides were chosen as EPR probes to gain a greater understanding of the different regions of the colloid in order to assess the current proposed models of the structure of the w...

Eighty healthy male Wistar rats, aged 5 weeks, weighing 100-120 g, were utilized for establishing tumour-bearing models by immediate Walker-256 cancerous ascites injection and randomly divided to four groups (n=20) treated with 0.2 ml solution containing saline, (32)P-colloid (0.3 mCi), endostatin gene (20 μg), endostatin gene combined with colloid (32)P. The effect of endostatin combined with ...

Dear Dr. Bedrossian: Recognizing colloid is an essential part of thyroid fine needle aspiration (FNA) interpretation as the quantity of colloid and the numbers follicular cell are very good indicators of the nature of the lesion. Here, we reported a unique colloid morphology observed in FNA specimen from a 47-year-old female patient with a history of breast cancer and long standing thyroid nodu...

K e y w o r d s Adsorption of colloids colloid adsorption kinetics of colloid adsorption structure of adsorbed colloids

Five colloid cysts of the third ventricle were compared with two spinal enterogenous cysts to examine the hypothesis that these entities have the same origin from primitive endodermal tissue. All the lesions showed cuboidal and columnar epithelium with mucus containing goblet cells and cilia. Immunohistochemistry for cytokeratin, EMA and CEA was positive in all the colloid cyst and enterogenous...

Colloid carcinoma, which is a very rare tumor of the uterine cervix, is composed of an excessive amount of mucus and a relative paucity of tumoral glandular cells within them. Herein, we report a rare case of colloid carcinoma of the cervix with adenocarcinoma in situ (AIS), intestinal and usual types, and endocervical adenocarcinoma (usual type) components. We also discuss the morphological an...