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Écrire et réécrire. Le palimpseste de la lyrique populaire dans la poésie de jeunesse de Rafael Alberti
Get PDFLa «velocidad de escape» de la IA y el futuro del trabajo
Get PDFEstsamos inmersos en la quinta revolución industrial que implica la superación de una forma de entender el trabajo y profundos cambios en la propia concepción del ser humano. Debemos asegurar que los daños colaterales sean mínimos para nuestra civilización
Meeting high precision requirements of additively manufactured components through hybrid manufacturing
Get PDFA hybrid approach combining the laser powder bed fusion (LPBF) process and post-processing operations through 5-axis milling was employed to manufacture a Ti6Al4V aerospace component. From the design step, the requirements and needs in all the stages of the Hybrid Additive Manufacturing process were taken into account. A numerical simulation of distortions promoted by residual stresses during the additive process was employed to consider material allowance. The status of the as-built and post-processed component was analysed through scanning and CMM inspection and roughness measurements. The 3D scanned model of the as-built LPBF-ed component was used to understand the distortion behaviour of the component and compared to the numerical simulation. Finally, 5-axis milling operations were conducted in some critical surfaces in order to improve surface quality and dimensional accuracy of the as-built com-ponent. The inspection of the as-built and post-processed component showed the improvement achieved through the proposed hybrid approach. The work aims to provide the baselines needed to enable the metal Hybrid Additive Manufacturing of components with complex geometries where mandatory precision is required by integrating high accuracy machining operations as post-processing technique.(c) 2022 The Author(s). This is an open access article under the CC BY license (http://creativecommons.org/ licenses/by/4.0/)
Las nuevas monedas digitales
Get PDFEl hombre es un ser abierto a trabajar y emprender. Un adecuado sistema monetario proporciona oportunidades y contribuye a su desarrollo interal. La revolución digital demanda plataformas monetarias más versátiles y eficientes
Berenguel de Landoria, XI Congreso internacional de Estudios Jacobeos, Xunta de Galicia, Santiago de Compostela 2021, 344 pp. [RESEÑA]
Get PDFDemografía, familia y cultura
Get PDFEn China suena la voz de alarma: la caída de la natalidad amenaza con privar a la industria de mano de obra y el envejecimiento de la población podría llevar al colapso económico. Lo que ocurre allí nos afectará a todos en mayor o menor grado
Biblioteca, 2023/2024
No full textEl folleto anual de la Biblioteca 2023-2024 contiene información general sobre las bibliotecas de la Universidad de Navarra, los servicios que presta y algunos datos estadísticos correspondientes al año anterior
Clinical implications of changing thyroglobulin and antithyroglobulin antibodies analytical methods in the follow-up of patients with differentiated thyroid carcinoma
Get PDFBackground and aims: Patients' response to treatment in differentiated thyroid cancer (DTC) is classified according to serum thyroglobulin concentrations (Tg), usually using the American Thyroid Association guidelines and considering potential interfering anti-thyroglobulin antibodies (Ab-Tg). We aim to evaluate the clinical implications of changing Tg and Ab-Tg quantification method.
Material and methods: Tg and Ab-Tg were quantified in 82 serum samples (60 from DTC patients) by Elecsys and Access immunoassays.
Results: Elecsys immunoassay rendered higher values of Tg than Access: mean bias 5.03 ng/mL (95%CI:-14.14-24.21). In DTC patients, there was an almost perfect agreement for response classification (kappa index=0.833). Discrepancies appeared in patients with undetermined response, with a more tendency to subclassification with Access. Ab-Tg showed a poor correlation (r=0.5394). When Elecsys cut-off was reduced to 43 IU/mL, agreement for positive/negative classification improved from a kappa index of 0.607 to 0.650. Prospective study with personalized follow-up showed that only 6.3% of Tg results required an analytical confirmation, being confirmed 93% of them.
Conclusions: Despite the biases observed, clinical impact of an analytical change is minimal in patients' management. However, cautious and personalized follow-up period after the change is still mandatory, especially in patients with Tg levels between 0.2 and 1 ng/mL
¿El mundo está preparado para la Gen Z?
Get PDFLa generación Z ha crecido en un permanente entorno de crisis, dentro de una sociedad en la que prima el individualismo, la pérdida de valores, altos niveles de corrupción política, el deterioro medioambiental, un desencanto social generalizado, la desigualdad y migraciones forzadas. Todo ello se suma a una crisis de identidad y personalidad profunda. Este contexto da luces para comprenderlos
