Results 71 to 80 of about 2,315 (265)
Estudios mineros y geológicos de la región del Guavio y de los Farallones de Medina
Boletín Geológico, 1953 En este informe se resumen los estudios que se han efectuado en los municipios de Gachetá, Junín, Ubalá y Gachalá, en la región del Guavio, de los Farallones de Medina, del Alto de Bojará y Alto del Quemado.
Roberto Wokittel, Jaime López Casas
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Advanced Engineering Materials, EarlyView.A numerical–experimental framework is developed for characterizing multi‐matrix fiber‐reinforced polymers (MM‐FRPs) combining epoxy and polyurethane matrices. Harmonic bending tests are integrated with finite element model updating (FEMU) to simultaneously identify elastic and viscoelastic material parameters.
Rodrigo M. Dartora +4 more
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Concentraciones de plomo (Pb) en cultivos de lechuga (Lactuca sativa) en Azuay, Ecuador
Scientia Agropecuaria, 2019 El crecimiento poblacional, la expansión de la ciudad y el aumento del parque automotor del cantón Cuenca ha causado un deterioro en la calidad del aire, lo que pone en riesgo la producción agrícola en las zonas rurales cercanas, el objetivo del presente
Jacinto Vázquez +2 more
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Advanced Engineering Materials, EarlyView.Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios +5 more
wiley +1 more source
Tecnología en Marcha, 2011 Se validó un método de análisis para la determinación del contenido de metales presentes en partículas PM10 colectadas del aire ambiente de la ciudad de San José.
Jorge Herrera-Murillo +1 more
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Advanced Engineering Materials, EarlyView.Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth +6 more
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Advanced Engineering Materials, EarlyView.This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal +2 more
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Advanced Engineering Materials, EarlyView.A combined finite element and phase‐field approach predicts the evolution of microstructure during the directional solidification of Ni‐based superalloys. The model reveals how withdrawal rate, temperature gradient, and wall thickness control the dendrite spacing, highlighting the strong effect of surface regions in thin sections where dendrite growth ...
Sean Böhm +3 more
wiley +1 more source
Methods for Reducing Metal Artifacts in Computerized Tomography
Nucleus, 2019 Metal artifacts are common in clinical images. Many methods for artifact reduction have been published to overcome this problem. In this work, animage smoothing method for artifact reduction (ISMAR) is proposed for image quality improvement in patients ...
Yakdiel Rodríguez-Gallo +2 more
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