This volume presents 10 reviews contributed by eminent researchers around the world on chitosan based materials. The introductory chapters present information on general characteristics of chitosan and various types of materials which are based on it such as nanofibers, nanoparticles, nanocapsules and other chemically modified chitosans. This is followed by an explanation of chitosan characterization and extraction techniques. Concluding chapters describe the applications of chitosan products in water treatment, drug delivery, edible films and pervaporation membranes. Readers will therefore gain an understanding about chitosan and materials derived from this polymer and their practical applications. The volume serves as a simple reference for chemical engineering students and professionals interested in the basic and applied chemistry of chitosan and chitosan-derived products.
The seventeenth-century missionary and diplomat Father Antônio Vieira once observed that Brazil was nourished, animated, sustained, served, and conserved by the "sad blood" of the "black and unfortunate souls" imported from Angola. In The Trade in the Living, Luiz Felipe de Alencastro demonstrates how the African slave trade was an essential element in the South Atlantic and in the ongoing cohesion of Portuguese America, while at the same time the concrete interests of Brazilian colonists, dependent on Angolan slaves, were often violently asserted in Africa, to ensure men and commodities continued to move back and forth across the Atlantic. In exposing this intricate and complementary relationship between two non-European continents, de Alencastro has fashioned a new and challenging examination of colonial Brazil, one that moves beyond its relationship with Portugal to discover a darker, hidden history.
This book will detail and report the way of working of this wonderful world of business that thrives with much success, generating profit for the franchisor, for the supplier, for the franchisee and for Brazil. For those who want to create their own future, franchising is a great choice! Franchising in Brazil aims to contribute to many key issues in the process of democratization of information. With the system being in an increasing development, we intend to show that the panorama is accessible to all classes of the economically active country, providing opportunities for investors and individuals, seeking out to enter the labor market, but also for the academic public, researchers, journalists, economists, government agencies, and individuals, among others. Therefore, the creation of a work on the entire system in the form of a manual became imperative to present, in a dynamic and didactic way, how franchising can cause innovation in all economic sectors of the country, and showing that everyone has the possibility of investing in franchising and benefit from inside information generated in this sector. Enjoy your reading, and may the success be with you!
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