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Thixoextrusion of A357 aluminium alloy

中国有色金属学会会刊：英文版 2010年第S3期20卷 1005-1009页

作者： A.FORN G.VANEETVELD J.C.PIERRET s.menargues M.T.BAILE M.CAMPILLO A.RAssILI Light Alloys and surfaces Treatment Design Centre(CDAL) Universitat Politècnica de Catalunya(UPC)Rambla de l'Exposició 2408800 Vilanova i la Geltrú(Barcelona)Spain ThixoUnit University of Liège4Boulevard de Colonster4000 LiègeBelgium

The aim of this work is to attempt the application of A357 Al-si-Mg cast alloy in the thixoextrusion process,evaluating the different forming parameters *** offers several advantages compared with traditional hot-extrusion such as lower pressure,minor friction forces,higher material fluidity and longer tool *** type of semi-solid process requires high solid fraction(0.7ss because of its low solidification *** alloy A357 is a commercial cast alloy characterized by high strength,ductility and corrosion *** is commonly used for cast production of automotive components and it is also suitable for semi-solid process,due to its wide range of solidification.A357 aluminium alloy was used as a feedstock for thixoextrusion in order to investigate thixoformability at high solid fraction.A357 alloy with high solid fraction(>0.85) is less sensitive to temperature drops and allows more stable material flow at higher *** know the forming parameters that improve the mechanical properties of thixoextruded parts,some extrusion tests were carried *** results were used as the main criteria for assessing the thixoforming viability of the A357 alloy.

关键词： thixoextrusion A357 aluminium alloy solid fraction semi-sold

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Post-Hospital syndrome and Hyponatremia

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Health 2021年第8期13卷 846-856页

作者： José Bellod-Tonda Julio Blázquez-Encinar María Dolores Jover-Ríos Carmen seguí-Pérez Juan Méndez-Mora Francisco Caparrós-Hernández Álex Méndez-Jover Marc seguí-Pérez David Baláž Leticia Espinosa del Barrio Jesús Corbacho-Redondo Carles García-Cervera Juan Manuel Núñez-Cruz Isidro Hernández-Isasi Javier Guzmán-Martínez Angie Gómez-Uranga Pedro Esteve-Atiénzar Jorge Peris-García Veronica Martínez-sempere Eliana Damonte-White Óscar Hernando Ruiz-Ariza Juan Carlos López-Corbalán Lourdes Lajara-Villar Andrea Riaño-Pérez Paloma Chazarra-Pérez María Escamilla-Espínola Maria Luisa Asensio-Tomás Miguel Ángel Auladell-Alemany Laura serna-Torres Asunción Pérez-Fullana Amparo Gómez-siurana sergio menargues-Irles José Miguel seguí-Ripoll Internal Medicine Department University Hospital of San Juan Alicante Spain Internal Medicine Department Torrevieja University Hospital Alicante Spain Internal Medicine Department Hospital La Vega Baja of Orihuela Alicante Spain CEU Cardinal Herrera University Veterinary Hospital Valencia Spain secondary school Marist Brothers High School Alicante Spain Department of Clinical Medicine Miguel Hernández University Elche Spain Primary Care Medicine Benilloba Spain sub-Delegation of the Government Alicante Spain Chemical Engineering Department University of Alicante Alicante Spain

Introduction: Post-hospital syndrome (PHs) is defined as a period of vulnerability during the first 30 days after a patient is discharged from hospital, in which multiple factors come into play. Hyponatremia is the mo... 详细信息

strong>Introduction:strong> Post-hospital syndrome (PHs) is defined as a period of vulnerability during the first 30 days after a patient is discharged from hospital, in which multiple factors come into play. Hyponatremia is the most frequent hydroelectrolytic disorder in hospitalized patients and may be related to the appearance of PHs. strong>Objective: strong>The objective is to estimate the prevalence of PHs that is assessed as the rate of readmissions in the first 30 days after discharge, in patients with hyponatremia. strong>Material and Methods:strong> It is a descriptive observational study of patients with hyponatremia who were discharged from 1 september 2010 to 2 February 2020 at the Internal Medicine service of the Hospital University of san Juan (Alicante, spain). strong>Results:strong> Of the 25 included patients, 5 (20%) were readmitted within a month of discharge, after a mean of 11.4 days (standard deviation [sD] 5.1). The overall mortality of the study was 20% (n = 5), with one case of death in the first 30 days post-hospitalization (4%). In 12 patients (48%) the origin of the hyponatremia was undetermined. The most frequently recorded etiology for the condition was pharmacological (n = 7, 28%), and there was pronounced variability in its clinical and laboratory study. The most widely used corrective measure was drug withdrawal, in 16 patients (64%). Water intake restriction was the most common treatment after discharge (5 patients, 20%), followed by urea (2 patients, 8%), while tolvaptan was not used. strong>Conclusion: strong>Hyponatremia may be the cause of PHs, which could increase the rate of early readmission. Hyponatremia is an underdiagnosed and undertreated entity, so it is necessary to apply an appropriate system to optimize its management and, in future studies, to assess its impact on PHs.

关键词： Hospitalization Hyponatremia Patient Readmission Inappropriate ADH syndrome

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