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This volume reviews the recent developments in the behavior of surfactant-modified, water-soluble polymers in aqueous solutions. The use of water-soluble polymers in biodegradable and biological systems and the development of unique hydrogels and new nonassociative water-soluble polymers is also discussed. This volume will be valuable reading for polymer chemists and engineers interested in personal care products, coatings, and detergents. Scientists interested in petroleum recovery and water treatment will also find this book useful.
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O Estado é o maior contratante de obras, serviços, bens e utilidades oferecidos pelo setor privado; daí, as aquisições devem ser alvo permanente de fiscalização pela sociedade e pelo corpo administrativo, sob a ótica da presunção de responsabilidade que exsurge do exercício de funções públicas. Nos anos 20?s do Século XXI, o Brasil colocou-se em evidência internacional pela pujança de sua economia e pela integridade de seus dirigentes, mas, poucos anos antes, ocupou lugar de destaque pelos escândalos de corrupção, favorecimentos, desvios de dinheiro público, conflitos de interesses, o que resultou em julgamento e condenação de agentes políticos de vários níveis de p...