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A transition prediction method for flow over airfoils based on high-order dynamic mode decomposition

Chinese Journal of Aeronautics 2019年第11期32卷 2408-2421页

作者： Mengmeng WU Zhonghua HAN Han NIE Wenping SONG soledad le clainche Esteban FERRER School of Aeronautics Northwestern Poly technical UniversityX i’an 710072China ETSIAE-UPM School of AeronauticsUniversidad Politecnica de MadridPza Cardenal Cisneros 3Spain

This article presents a novel approach for predicting transition locations over airfoils,which are used to activate turbulence model in a Reynolds-averaged Navier-Stokes flow *** approach combines Dynamic Mode Decomposition(DMD)with e^*** core idea is to use a spatial DMD analysis to extract the modes of unstable perturbations from a steady flowfield and substitute the local Linear Stability Theory(LST)analysis to quantify the spatial growth of Tollmien–Schlichting(TS)*** is assumed to take place at the stream-wise location where the most amplified mode’s N-factor reaches a prescribed threshold and a turbulence model is activated *** improve robustness,the high-order version of DMD technique(known as HODMD)is employed.A theoretical derivation is conducted to interpret how a spatial highorder DMD analysis can extract the growth rate of the unsteady *** new method is validated by transition predictions of flows over a low-speed Natural-Laminar-Flow(NLF)airfoil NLF0416 at various angles of attack and a transonic NLF airfoil *** transition locations predicted by our HODMD/e^Nmethod agree well with experimental data and compare favorably to those obtained by some existing methods■.It is shown that the proposed method is able to predict transition locations for flows over different types of airfoils and offers the potential for application to 3D wings as well as more complex configurations.

关键词： Airfoil Dynamic mode decomposition(DMD) e^N criterion Navier-Stokes equations Transition prediction

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Bone metastases as initial presentation of hepatocellular carcinoma

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World Journal of Hepatology 2017年第29期9卷 1158-1165页

作者： Luzdivina Monteserin Alicia Mesa Maria soledad Fernandez-Garcia Arantza Gadanon-Garcia Manuel Rodriguez María Varela Department of Gastroenterology and Hepatology Complejo Asistencial Universitario de León Department of Radiology Hospital Universitario Central de Asturias Department of Pathology Hospital Universitario Central de Asturias Department of Traumatology Hospital Universitario Central de Asturias Liver Unit Hospital Uni-versitario Central de Asturias

Extra-hepatic spread is present in 5% to 15% of patients with hepatocellular carcinoma(HCC) at the time of diagnosis. The most frequent sites are lung and regional lymph nodes. Here, we report 3 cases of unsuspected HCC with symptoms due to bone lesions as initial presentation. Morphological characteristics and immunohistochemistry from the examined bone were the key data for diagnosis. None of the patients had an already known chronic liver disease. Differential diagnoses with HCC upon ectopic liver disease or hepatoid adenocarcinoma were shown. Therapy with the orally active multikinase inhibitor sorafenib plus symptomatic treatment was indicated.

关键词： Hepatocellular carcinoma Bone metastases Liver cirrhosis Sorafenib

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Solanum lycopersicum: Novelties for Climate Factors and Its Agronomic Management for High Yields

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World Journal of Engineering and Technology 2022年第3期10卷 605-612页

作者： Víctor García-Gaytán soledad García-Morales Ana V. Coria-Téllez Fanny Hernández-Mendoza Janet María león-Morales El Colegio de Michoacán La Piedad México Profesor Investigador Mejoramiento Integral de Plantas a Través de la Genética y Nutrición Vegetal La Piedad México (CONACYT) Centro de Investigación y Asistencia en Tecnología y Diseñ o del Estado de Jalisco Zapopan México Coordinación Académica Región Altiplano Oeste Universidad Autónoma de San Luis Potosí San Luis Potosí México

The intensive production of vegetables such as tomatoes depends on various strategies to achieve high *** of this manuscript is to provide scientific and technological strategies for the intensive production of tomato or other vegetables in mega-production factories. However, with the advancement of knowledge, new improvements in the strategies will be incorporated. We have carried out research related to growth and yield variables in S. Lycopersicum. From this research we have worked on the intensive production of this noble vegetable at an industrial level. The results obtained are improvements in the production system. The improvements include the selection of the appropriate variety, germination and development of seedlings in a certified nursery. Trans-plantation in soil or hydroponics. The conditions of nutrient applications from the irrigation head system. The ventilation system and monitoring of climatic factors both day and night (temperature and relative humidity). Monitoring of macro- and micronutrients in the plant system, including Ca, K, Fe, and Zn. Soil fertility analyzes should include: primary and secondary macronutrients (ppm), organic matter (OM), EC, pH, bulk density (BD), and cation exchange capacity (CEC). The nutritional diagnosis to confirm ranges of sufficiency. As a tool in plant nutrition programs, foliar application can include biostimulants and growth regulators. The foregoing can be considered strategies for the integral management of the tomato crop.

关键词： Integrated Management Climate Factors Plant Nutrition Growth Regulators

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