Biological material, reactivity transfer

Micelle-forming materials obtained by radical copolymerization of sodium salt of AMPS with 9-vinylphenanthrene and 1-vinylpyrene (AIBN, THE solvent, 60°C) can be used as media for photosensitized electron transfer in aqueous systems (166). Reactive microgels obtained by copolymerization of AMPS with N -methyleneacrylamide are suitable for the immobilization of biological materials (167). 

The transfer of P from the continents to the ocean is separated into two distinct pathways. The flux of reactive P (F25) is estimated via measurements of dissolved organic and inorganic P in rivers. This P is transported directly to the surface ocean and is available for biological uptake. The other pathway by which P is transported to the oceans is that associated with particulate materials, either suspended in river waters or simply transported to the ocean as bedload. The P in these materials is considered locked in the solid structure and not available for biological uptake. In general, these particles rapidly settle to the ocean bottom and are incorporated into the sediments. This removal is rapid enough that this flux is represented as the direct transport of P from the land reservoirs to the sediments (F j). 

Contact lenses are the most common polymer product in ophthalmology. The basic requirements for this type of materials are (T)excellent optical properties with a refractive index similar to cornea good wettability and oxygen permeability ( ) biologically inert, degradation resistant and not chemically reactive to the transfer area ( ) with certain mechanical strength for intensive processing and stain and precipitation prevention. The common used contact lens material includes poly-P-hydroxy ethyl methacrylate, poly-P-hydroxy ethyl methacrylate-N-vinyl pyrrolidone, poly-P-hydroxy ethyl methacrylate, Poly-P-hydroxy ethyl methacrylate - methyl amyl acrylate and polymethyl methacrylate ester-N-vinyl pyrrolidone, etc. The artificial cornea can be prepared by silicon rubber, poly methyl... 

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