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Minerals, organic matter and microorganisms are the major solid components in soil systems. These three constituents do not function independently but rather interact with each other constantly at all times and everywhere in the soil ecosystem. The interactions profoundly affect a series of physical, chemical and biological processes of soils including the behavior, transformation and fate of various nutrients and pollutants. The research on these interactions should, thus, be an important issue for Soil and Environmental Scientists. Therefore, the International Society of Soil Science...

Minerals, organic matter and microorganisms are the major solid components in soil systems. These three constituents do not function independently but rather interact with each other constantly at all times and everywhere in the soil ecosystem. The interactions profoundly affect a series of physical, chemical and biological processes of soils including the behavior, transformation and fate of various nutrients and pollutants. The research on these interactions should, thus, be an important issue for Soil and Environmental Scientists. Therefore, the International Society of Soil Science...

Los carbohidratos son las materias primas basicas para la sintesis de poliamidas, poliesteres, poliuretanos...., la utilizacion de productos naturales como materiales de partida para la obtencion de polimeros tiene la doble finalidad de hacerlos menos dependientes de las materias primas fosiles de naturaleza perecedera y de favorecer la biodegradabilidad y biocompatibilidad de los mismos. De esta forma, su impacto medioambiental es menor que el de los polimeros clasicos, (Fishman, 1994). En el caso de los carbohidratos, cobra importancia la gran abundancia de los azucares naturales, su...