Download or read book Estrategia Tecnol Gica Sustentable para Deshidratar Frutas Verduras y Legumbres written by Jos V. Ctor Galaviz and published by Palibrio. This book was released on 2012-07 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt: Debido a que los resultados del análisis de uniformidad de temperatura del deshidratador convencional no fueron los óptimos, se procedió a diseñar y construir un nueva deshidratador con materiales refractarios con la finalidad de uniformizar la temperatura y mejorar los tiempos de proceso. Los materiales refractarios que se utilizaron fueron el vidrio blanco de 6 mm de espesor y una cama de poliuretano (10cm), debido a su bajo coeficiente de conductividad térmica. Se realizó un análisis estadístico en una prueba ANOVA a un nivel de significancia de 0.5%, donde se hizo una comparación de las medias muéstrales y una comparación de las varianzas de cada uno de los tratamientos, el cual se encontró que la construcción del nuevo deshidratador con materiales refractarios tuvo un comportamiento de uniformidad en las temperaturas a un 95% de confianza. Cabe destacar que la temperatura promedio del deshidratador convencional fue de 38.61°C, mientras que con el nuevo deshidratador construido con materiales refractarios se logró incrementar a 57.43°C, destacando que esta temperatura se logró uniformizar en las tres áreas analizadas del deshidratador. Esto significó un incremento de temperatura con respecto al deshidratador solar convencional de un 48.74%

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Download or read book Structural Materials written by José Antonio Pero-Sanz Elorz and published by Springer Nature. This book was released on 2019-09-25 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book covers the most important materials (naturals, metals, ceramics, polymers and composites) to be used mainly as structural engineering materials. Their main applications based on the properties are described in the first chapters of the book: mechanical, physical and chemical. The second part of the book is dedicated to the conceptual design by properties for a certain structural application: stiffness, mechanical strength, toughness, fatigue resistance, creep, etc., taking into account the weight and the cost. One of the chapters of the second part of the book is focused on the heat treatments of steels in order to improve their resistance to fatigue. The book concludes with a critical comparison between materials considering their production, properties and cost, and the forecast about the utilization of the different fields of materials in structural applications.

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Download or read book The Statutes at Large of the United States written by United States and published by . This book was released on 1887 with total page 1242 pages. Available in PDF, EPUB and Kindle. Book excerpt: Statutes at Large is the official annual compilation of public and private laws printed by the GPO. Laws are arranged by order of passage.

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Download or read book The Public Statutes at Large of the United States of America written by United States and published by . This book was released on 1944 with total page 828 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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