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Tate, Jitendra S.; Akinola, Adekunle T.; Kabakov, Dmitri – Journal of Technology Studies, 2009
Polymer matrix composites (PMC), often referred to as fiber reinforced plastics (FRP), consist of fiber reinforcement (E-glass, S2-glass, aramid, carbon, or natural fibers) and polymer matrix/resin (polyester, vinyl ester, polyurethane, phenolic, and epoxies). Eglass/ polyester and E-glass/vinyl ester composites are extensively used in the marine,…
Descriptors: Structural Elements (Construction), Construction Materials, Plastics, Technological Advancement
Commoner, Barry – Today's Education, 1972
Discusses the need for productive reforms to return the ecosphere to its proper balance. The author claims such reforms should deal with eliminating socially wasteful types of production and at the same time improving the quality of life. (AS)
Descriptors: Biological Influences, Ecological Factors, Ecology, Environment