The Internet has been a widely-adopted means of media distribution in these days especially after the introduction of MPEG file format. To gain control over listeners', on-line suppliers of music files use authentication schemes to control listeners' access and access mode. Such arrangements requir.....
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In heavy metal producing industries such as electroplating, metal-finishing, steels, chemical manufacturing, leather tanning, the handling of effluent has always been the main concern. Improper treatment to the wastewater before it is drained out into rivers or oceans will cause a great pollution an.....
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A novel method is disclosed for the preparation of an aqueous polyacrylate modified polyurethane dispersion. The preparation method includes three main steps: (a) preparation of polyacrylates polymer or copolymer without using cationic surfactants; (b) preparation of polyurethane prepolymer with car.....
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