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Sample treatment has been the focus of intensive research in the last 20 years since it still remains a bottleneck in precise analytical procedures. The low concentration of the target analytes, the large amount of potential interfering agents and the incompatibility of the sample matrix with the instrumental techniques are the main reasons for these bottlenecks. In most of these methods, sample treatment is an unavoidable step and it has a clear influence on the quality (sensitivity, selectivity, and accuracy) of the final analytical results. While the usefulness of microextraction techniques has been established, their complete acceptance in analytical laboratories (including official meth...
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Directory of foreign diplomatic officers in Washington.
This Yearbook aims to contribute to a greater awareness of the functions and activities of the organs of the Inter-American system for the protection of human rights. The Yearbook is partly published as an English-Spanish bilingual edition. Two volume set.
Además de preservar la memoria histórica del Taller Nacional de Crítica Cinematográfica de Camagüey, este libro resume el pensamiento crítico vertido, durante un cuarto de siglo, en las sesiones teóricas de este evento, uno de los más importantes que en el ámbito cinematográfico del país se desarrolla. Con su amena glosa sobre los más trascendentales temas allí tratados y con el privilegio de ser uno de sus principales artífices, su autor hace veraz la opinión del cineasta Fernando Pérez cuando expresó que el Taller contribuyó a "complejizar la dinámica de nuestro pensamiento, tanto de críticos, como de cineastas" y se ha convertido en "un espacio imprescindible para pensar y desarrollar los horizontes de nuestra cinematografía: un aporte a la cultura nacional".
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Recursos humanos en investigación y desarrollo.--V.2.
Directory of foreign diplomatic officers in Washington.