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Adhesion is the tendency of dissimilar particles or surfaces to cling to one another. (Cohesion refers to the tendency of similar or identical particles and surfaces ...
Mucoadhesion involves several types of bonding mechanisms, and it is the interaction between each process that allows for the adhesive process. The major categories are wetting theory, adsorption theory, diffusion theory, electrostatic theory, and fracture theory. [5]
The strength of adhesion depends on many factors, including the means by which it occurs. In some cases, an actual chemical bond occurs between adhesive and substrate. Thiolated polymers , for example, form chemical bonds with endogenous proteins such as mucus glycoproteins, integrins or keratins via disulfide bridges. [ 41 ]
An increased residence time through adhesion to the mucosal surface, such as in the eye or the nose can lead to an improved absorption of the drug. [ citation needed ] Long-duration continuous imaging of diverse organs (via a wearable bioadhesive stretchable high-resolution ultrasound imaging patch, potentially enabling novel diagnostic and ...
Bacterial adhesins are cell-surface components or appendages of bacteria that facilitate adhesion or adherence to other cells or to surfaces, usually in the host they are infecting or living in. Adhesins are a type of virulence factor.
Focal adhesions are visible as red dots at the end of the green bundles. In cell biology, focal adhesions (also cell–matrix adhesions or FAs) are large macromolecular assemblies through which mechanical force and regulatory signals are transmitted between the extracellular matrix (ECM) and an interacting cell.
Meghan Markle's refreshed lifestyle brand has a logo with a meaningful symbol.. On Feb. 18, the Duchess of Sussex announced that she was rebranding her lifestyle venture previously known as ...
There are three major requirements of creating a desirable surface for adhesive bonding of plastics: the weak boundary layer of the given material must be removed or chemically modified to create a strong boundary layer; the surface energy of the adherend should be higher than the surface energy of the adhesive for good wetting; and the surface profile can be improved to provide mechanical ...