AESS Estudiants

Peer Reviewe

AESS Estudiants

Peer Reviewe

Resumen de actividades

Peer Reviewe

AESS estudiants

Peer Reviewe

Estrellas sobre fondos cambiantes: convocando la luz

[EN] Following a seven year period dedicated to the creation and development of nineteen manuscript poems, which today are considered a synthesis of his thinking, in 1955 Le Corbusier published his Poème de l´Angle Droit. The study of this poem reveals the principal themes that dominated his trajectory, as well as a series of elements, namely the sword, the cloud and the star, which appear in his pictorial and architectural work. This paper aims to shed light on the connections established between one of these elements in particular —the star— and its incorporation into Lecorbuserian method of architectural design. It seeks to analyse how this item is repeated obsessively, forming images which remain rooted in the architectural strategies developed by the Swiss architect. The star speaks of a lighthouse, a guide, a driving force that spurs on the journey. It is the element that represents the mobility of the cosmos, which governs the nature of repetition linked to art; a signal that guides the traveler and traces the route their steps must take them, leading us to think of a bright light and the distance that separates the real and the imagined. And above all, it is the reference in those buildings that condensed the reflections that gave coherence and unity to the various project options.[ES] Tras crear y desarrollar durante siete años diecinueve poemas manuscritos, que hoy en día son considerados síntesis de su pensamiento, Le Corbusier publicó en 1955 su Poème de l´Angle Droit. Al estudiar este poema reconocemos en él los principales temas presentes en su trayectoria, así como algunos elementos —la espada, la nube y la estrella— que aparecen en su obra pictórica y arquitectónica. La presente comunicación pretende desvelar las conexiones que se establecen entre uno de estos elementos en concreto, como es la imagen de la estrella, y su incorporación al proceso de proyecto lecorbusieriano. Se trata de analizar cómo este tema, que se repite de forma obsesiva, configura imágenes que permanecen en las estrategias arquitectónicas que llevó a cabo el maestro suizo. La estrella habla de faro, de guía, de motor dentro de un proceso de viaje. Es el elemento que representa la movilidad del cosmos, que rige ese carácter de repetición ligado al arte; una señal que guía al viajero y define el itinerario que deben seguir sus pasos, que nos hace pensar en una brillante luz y en la distancia entre lo real y lo imaginado. Y, sobre todo, es la referencia presente en edificios, que condensaban así reflexiones que daban coherencia y unidad a las distintas opciones del proyecto.Álvarez Gallego, I.; Blanco Agüeira, S. (2016). Estrellas sobre fondos cambiantes: convocando la luz. En LE CORBUSIER. 50 AÑOS DESPUÉS. Editorial Universitat Politècnica de València. 99-113. https://doi.org/10.4995/LC2015.2015.980OCS9911

Diagnóstico ou estigma? Problematizar a doença a partir de uma abordagem duoetnográfica

Objective: The purpose of this paper is to talk about the sociocultural constructions around the disease. The main interest is to contribute to dismantle from our experiences as researchers and diagnosed women, the stigma that permeates the daily lives of people like us: obese or with HPV (Human Papilloma Virus). Methodology: Through the methodology known as duoethnography, in which two individuals narrate shared experiences to study in detail a sociocultural phenomenon, we present a series of thoughts that question the place in which we are placed when we are valuated as sick. Results: We found, from our simultaneous reflections, three epiphanies that relate first to biomedical stigma, then to personal stigma and then to sociocultural stigma. A fourth epiphany expounds joint learning considerations during the authors' academic shared experience. Conclusion: We are interested, above all, in leaving an invitation to critically consider stigma, we are concerned with talking about care and pointing out discriminatory practices rather than denying our diagnoses.Objetivo: El propósito de este escrito es hablar sobre las construcciones socioculturales alrededor de la enfermedad. La principal preocupación es contribuir a desmontar desde nuestras vivencias como investigadoras y mujeres diagnosticadas, el estigma que impregna la vida cotidiana de las personas como nosotras: obesas o con VPH (virus del papiloma humano). Metodología: Mediante la metodología conocida como duoetnografía, en la que dos individuos narran experiencias compartidas para profundizar sobre un fenómeno sociocultural, presentamos una serie de cavilaciones que cuestionan el lugar social en el que se nos coloca al ser valuadas como enfermas. Resultados: Encontramos, a partir de nuestras reflexiones simultáneas, tres epifanías que se relacionan, primero, con el estigma biomédico, luego, con el estigma personal y, después, con el estigma sociocultural. Una cuarta epifanía expone las consideraciones de aprendizaje conjunto durante el proceso de convivencia académica de las autoras. Conclusión: Nos interesa, sobre todo, dejar una invitación a considerar críticamente el estigma, nos preocupa hablar de cuidado y apuntar las prácticas discriminatorias más que negar nuestros diagnósticos.Objetivo: O objetivo deste trabalho é falar sobre as construções socioculturais que envolvem a doença. A principal preocupação é contribuir para desmontar, desde nossas experiências como pesquisadores e mulheres diagnosticadas, o estigma que permeia a vida diária de pessoas como nós: obesas ou com HPV (Human Papilloma Virus). Metodologia: Por meio da metodologia conhecida como duoetnografia, na qual dois indivíduos narram experiências compartilhadas a fim de aprofundar um fenômeno sociocultural, apresentamos uma série de reflexões que questionam o lugar social em que somos colocados quando somos categorizadas como doentes. Resultados: Encontramos, a partir de nossas reflexões simultâneas, três epifanias que se relacionam primeiro com o estigma biomédico, depois com o estigma pessoal e depois com o estigma sociocultural. Uma quarta epifania expõe as considerações de aprendizagem conjunta durante o processo de convivência acadêmica das autoras. Conclusão: Estamos interessados, acima de tudo, em deixar um convite para considerar criticamente o estigma, estamos preocupadas em falar de cuidados e apontar práticas discriminatórias em vez de negar nossos diagnósticos

Analysis of fouling resistances under dynamic membrane filtration

The mechanisms of fouling in the ultrafiltration of polyethylene glycol (PEG) are analysed using the complete blocking and the intermediate blocking Hermia's models adapted to crossflow filtration. The parameters of these models were theoretically estimated. The predicted results were compared with experimental data. Ultrafiltration experiments were performed with Carbosep M2 monotubular ceramic (Orelis, S.A. (France)). The fouling ultrafiltration experiments were carried out at a constant temperature and feed concentration and different feed flow rates and transmembrane pressures. The precision in the predictions is very high. The results showed that the phenomenon controlling fouling was intermediate blocking for high fouling conditions. © 2011 Elsevier B.V.The authors of this work wish to gratefully acknowledge the financial support of the Spanish Ministry of Science and Technology (MCYT) through its project no. CTQ2005-03398.Vincent Vela, MC.; Cuartas Uribe, BE.; Alvarez Blanco, S.; Lora García, J. (2011). Analysis of fouling resistances under dynamic membrane filtration. Chemical Engineering and Processing: Process Intensification. 50(4):404-408. https://doi.org/10.1016/j.cep.2011.02.010S40440850

Salt cleaning of ultrafiltration membranes fouled by whey model solutions

In this work, three ultrafiltration (UF) membranes were fouled with whey model solutions that contained BSA (1% w/w) and CaCl2 (0.06% w/w). These membranes were cleaned with NaCl solutions. Temperature, crossflow velocity and concentration were varied. The membranes considered were a polyethersulfone (PES) membrane, a ceramic ZrO2–TiO2 membrane and a permanently hydrophilic polyethersulfone (PESH) membrane. Their molecular weight cut-offs (MWCOs) are 5, 15 and 30 kDa, respectively. The cleaning efficiency was related to the MWCO, membrane material and operating conditions. The results obtained demonstrated that NaCl solutions were able to clean the membranes tested. In addition, the higher the temperature and the crossflow velocity of the cleaning solution, the higher the cleaning efficiency was. However, there was an optimum value of NaCl concentration to clean the membranes effectively. When concentration was higher than the optimum, the cleaning efficiency decreased. The relationship between the cleaning efficiency and the operating conditions was obtained with statistical and optimization analysis.The authors of this work wish to gratefully acknowledge the financial support from the Spanish Ministry of Science and Innovation through the project CTM2010-20186 and the Generalitat Valenciana through the program "Ayudas para la realizacion de proyectos I+D para grupos de investigacion emergentes GV/2013".Corbatón Báguena, MJ.; Alvarez Blanco, S.; Vincent Vela, MC. (2014). Salt cleaning of ultrafiltration membranes fouled by whey model solutions. Separation and Purification Technology. 132:226-233. https://doi.org/10.1016/j.seppur.2014.05.029S22623313

Cleaning of ultrafiltration membranes fouled with BSA by means of saline solutions

In this work, four ultrafiltration (UF) membranes with molecular weight cut-offs (MWCOs) of 5, 15, 30 and 50 kDa, respectively, were fouled with 1% BSA aqueous solutions and cleaned with different saline solutions. The influence of MWCO, membrane material and operating conditions on the cleaning effi- ciency was investigated. Saline solutions were able to clean the 5, 15 and 30 kDa membranes, but not the 50 kDa membrane. NaCl, NaNO3, NH4Cl and KCl were the most effective salts. The cleaning tests demonstrated that the higher the temperature of the saline solution was, the higher the cleaning efficiency was also. In addition, an increase in the crossflow velocity resulted in an increase in the hydraulic cleaning efficiency (HCE). However, there was an optimum value of salt concentration to clean the membrane effectively. Response Surface Methodology was used to investigate the relationship between salt concentration and temperature in the cleaning process.The authors of this work wish to gratefully acknowledge the financial support from the Spanish Ministry of Science and Innovation through the project CTM2010-20186 and the Generalitat Valenciana through the program "Ayudas para la realizacion de proyectos I+D para grupos de investigacion emergentes GV/2013".Corbatón Báguena, MJ.; Alvarez Blanco, S.; Vincent Vela, MC. (2014). Cleaning of ultrafiltration membranes fouled with BSA by means of saline solutions. Separation and Purification Technology. 125(7):1-10. https://doi.org/10.1016/j.seppur.2014.01.035S110125

Prediction of poor outcome in clostridioides difficile infection: A multicentre external validation of the toxin B amplification cycle

Producción CientíficaClassification of patients according to their risk of poor outcomes in Clostridioides difficile infection (CDI) would enable implementation of costly new treatment options in a subset of patients at higher risk of poor outcome. In a previous study, we found that low toxin B amplification cycle thresholds (Ct) were independently associated with poor outcome CDI. Our objective was to perform a multicentre external validation of a PCR-toxin B Ct as a marker of poor outcome CDI. We carried out a multicentre study (14 hospitals) in which the characteristics and outcome of patients with CDI were evaluated. A subanalysis of the results of the amplification curve of real-time PCR gene toxin B (XpertTM C. difficile) was performed. A total of 223 patients were included. The median age was 73.0 years, 50.2% were female, and the median Charlson index was 3.0. The comparison of poor outcome and non–poor outcome CDI episodes revealed, respectively, the following results: median age (years), 77.0 vs 72.0 (p = 0.009); patients from nursing homes, 24.4% vs 10.8% (p = 0.039); median leukocytes (cells/μl), 10,740.0 vs 8795.0 (p = 0.026); and median PCR-toxin B Ct, 23.3 vs 25.4 (p = 0.004). Multivariate analysis showed that a PCR-toxin B Ct cut-off <23.5 was significantly and independently associated with poor outcome CDI (p = 0.002; OR, 3.371; 95%CI, 1.565–7.264). This variable correctly classified 68.5% of patients. The use of this microbiological marker could facilitate early selection of patients who are at higher risk of poor outcome and are more likely to benefit from newer and more costly therapeutic options