Biomedical applications of hydrogels: A review of patents and ...
Chemical hydrogels are commonly prepared in two different ways: 'three-dimensional polymerization' (), in which a hydrophilic monomer is polymerized in the presence of a polyfunctional cross-linking agent, or by direct cross-linking of water-soluble polymers ().
Organic Chemistry - Introduction (1) Structural formulae : As well as using a normal type of molecular formula to describe an organic molecule, they can be represented by drawing out their structure i.e. by showing how the atoms are connected, or bonded, to each other.
Absorption Not to be confused with adsorption, absorption is one substance is taken up into the interior of another - adsorption with a 'd' is entirely a surface effect. . Examples are the swelling of a poly(acrylamide) polymer with aqueous solution (in a disposable nappy) or the dissolution of carbon dioxide in seawater (one of the possible ...
GCE Study Buddy ------ The Best O Level revision resource
Providing study notes, tips, and practice questions for students preparing for their O level or upper secondary examinations. You can find notes and exam questions for Additional math, Elementary math, Physics, Biology and Chemistry.
Carbohydrates, Proteins, Vitamins and Minerals - WikiEducator
There are seven main classes of nutrients that the body needs. These are carbohydrates, proteins, fats, vitamins, minerals, fiber and water. It is important to consume these seven nutrients on a daily basis to build and maintain health.
Proteins - Herbal Blessings: Dr. Friedli's Alternative ...
Supersecondary structure. Rao and Rossmann (1973) observed that there were structural components comprising a few alpha-helices or beta-strands which were frequently repeated within structures, called "supersecondary structures" (being intermediate to secondary and tertiary structure) and suggested that these structures might be due to convergence.
Abstract. The importance of configurational, vibrational, and electronic excitations in crystalline solids of technological interest makes a rigorous treatment of thermal excitations an essential ingredient in first-principles models of materials behavior.