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Plastificado higro-térmico de la madera de Quercus scytophylla. Estudio por ondas de esfuerzo
Joel Benancio Olguín Cerón (2011, [Tesis de maestría])
Facultad de Ingeniería en Tecnología de la Madera. Maestría en Ciencias en Tecnología de la Madera
Wood is a thermoelastic material: when the internal temperature of the wood increases, its modulus of elasticity decreases. This manifestation has an instantaneous and temporary character. That is, if the wood recovers its initial temperature, the modulus of elasticity regains its previous value. This is preferably observed in a temperature range of 0 to 120 ° C.
La madera es un material termoelástico: cuando la temperatura interna de la madera aumenta, su módulo de elasticidad disminuye. Esta manifestación tiene un carácter instantáneo y temporal. Es decir, si la madera recobra su temperatura inicial, el módulo de elasticidad recobra su valor anterior. Este hecho se observa preferentemente en un rango de temperaturas de 0 a 120 °C.
INGENIERÍA Y TECNOLOGÍA FITECMA-M-2011-0003 Plastificado Hogro-térmico Madera Quercus scytophylla Ondas
VICTOR MANUEL MURO TORRES FELIPE AMEZCUA MARTINEZ Gerogina Ramírez Ortiz FRANCISCO JAVIER FLORES DE SANTIAGO Felipe Amezcua Linares Yareli Hernández Álvarez (2022, [Artículo])
"Differences in fish assemblages’ structures and their relations with environmental variables (due to the variations in sampled seasons, habitats, and zones) were analyzed in two adjacent estuaries on the north Pacific coast of Mexico. Environmental variables and fish catches were registered monthly between August 2018 and October 2020. Multivariate analyses were conducted to define habitats and zones based on their environmental characteristics, and the effect of this variability on fish assemblages’ composition, biomass, and diversity (α and β) was evaluated. A total of 12,008 fish individuals of 143 species were collected using different fishing nets. Multivariate analyses indicated that fish assemblages’ structures were different between zones due to the presence, height, and coverage of distinct mangrove species. Additionally, depth and salinity showed effects on fish assemblages’ diversity (α and β-nestedness), which presented higher values in the ocean and remained similar in the rest of the analyzed zones and habitats. These results and the differences in species replacement (β-turnover) indicate the singularity of fish assemblages at estuaries (even in areas close to the ocean) and the necessity to establish local management strategies for these ecosystems."
mangrove forests, marine protected areas, alpha diversity, beta diversity, multivariate analyses CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA CIENCIAS AGRARIAS PECES Y FAUNA SILVESTRE DINÁMICA DE LAS POBLACIONES DINÁMICA DE LAS POBLACIONES