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When can contexts and diversity be resources, rather than risks, for children's developmental pathways? Scholars, policy makers, and practitioners increasingly realize that middle childhood matters as a time when children's pathways diverge, as they meet new and overlapping contexts they must navigate on their way to adolescence and adulthood. This volume shines new light on this important transition by tracing how these contexts -- cultural, economic, historical, political, and social -- can support or undermine children's pathways, and how children's own actions and the actions of those arou

Child development. --- Children --- School children. --- Children with social disabilities. --- Socially handicapped children --- Children with disabilities --- People with social disabilities --- Elementary school students --- Primary school students --- Pupils --- School children --- Schoolchildren --- Students --- Child study --- Development, Child --- Developmental biology --- Social conditions. --- Education --- Development

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Amino acid analysis is widely used in biotechnology, biomedical, and food analysis laboratories. Amino Acid Analysis Protocols constitutes a major collection of these indispensable analytical techniques, both classic and cutting-edge, of high utility for answering specific biological questions. Common methods include those based on HPLC or gas chromatography separation and analysis after precolumn derivatization. New techniques based on capillary electrophoresis separation, high-performance anion exchange chromatography, and mass spectrometry are also presented. Since results depend heavily on the quality of the sample, most contributors have devoted a section to sample preparation, particularly to the collection and storage of bodily fluids. A new method for desalting samples prior to hydrolysis is also provided. Each method is described in step-by-step detail to ensure successful experimental results, and contains helpful notes on pitfalls to avoid, and variations that enable the methods to be used with different systems. Up-to-date and highly practical, Amino Acid Analysis Protocols offers analytical and clinical chemists, as well as a broad range of biological and biomedical investigators, a rich compendium of laboratory tools for the productive analysis of both common and uncommon amino acids.

Biochemistry. --- Biochemistry, general. --- Amino acids --- Analysis. --- Analysis

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