المؤلفون: Blesa, Fernando, Bernal, Juan D., Seoane, Jesus M., Sanjuan, Miguel AF

مصطلحات موضوعية: Nonlinear Sciences - Chaotic Dynamics

الوصف: In this paper, we study different types of phase space structures which appear in the context of relativistic chaotic scattering. By using the relativistic version of the H\'{e}non-Heiles Hamiltonian, we numerically study the topology of different kind of exit basins and compare it with the case of low velocities in which the Newtonian version of the system is valid. Specifically, we numerically study the escapes in the phase space, in the energy plane and also in the $\beta$ plane which richly characterize the dynamics of the system. In all cases, fractal structures are present, and the escaping dynamics is characterized. Besides, in every case a scaling law is numerically obtained in which the percentage of the trapped trajectories as a function of the relativistic parameter $\beta$ and the energy is obtained. Our work could be useful in the context of charged particles which eventually can be trapped in the magnetosphere, where the analysis of these structures can be relevant.

الوصول الحر: http://arxiv.org/abs/2404.05254Test

المؤلفون: Zaragoza Bernal, Juan Manuel

المصدر: Dynamis: Acta Hispanica ad Medicinae Scientiarumque Historiam Illustrandam; Vol. 38, Núm. 2 (2018): Anticoncepción, sexualidad y salud; p. 453-476

مصطلحات موضوعية: material culture, paternalism, Michel Foucault, suffragettes, forced-feeding, cultura material, paternalismo, sufragistas, alimentación forzada

الوصف: Relationships between medicine and power have been a major concern in the History of Medicine, especially in the works of Michel Foucault around the concept of biopower. In this article, we slightly distance ourselves from this research program and seek a distinct approach. Starting from an extremely well-known case, the force feeding of suffragettes in Edwardian England, our aim was to identify and analyze material practices that relate medicine, as a knowledge discipline, to the practice of power by the State. In our analysis, we use the metaphor of the theater, understanding that certain forms of power are above all representation, in that they are performed in front of an «audience» in a certain manner and with the appropriate «props». In this article, we understand that the form of power exerted by medicine, which we identify as paternalism, is power of this type. We explore its functioning in relation to two phenomena: on one hand, the paternalist strategy, analyzed through various studies on the history of labor relationships; and on the other hand, the material practices and objects by which suffragists were force-fed. We draw dual conclusions: first, that paternalism (understood as a historically determined power relationship) is embedded in medical material culture, to the point that we cannot think of it without including the specific objects in which it is actualized; and second, that the relationships between medicine and power can be understood through the idea of pastoral power developed by Foucault in his final years, facilitating a distinct and potentially highly productive reading of the progression of the discipline during the 19th and 20th centuries.
Las relaciones entre medicina y poder han sido parte fundamental de las preocupaciones de la historia de la medicina, muy especialmente desde los trabajos de Michel Foucault, alrededor del concepto de biopoder. En este artículo nos desmarcamos ligeramente de este programa de investigación y buscamos una aproximación distinta. Partiendo de un caso sobradamente conocido (la alimentación forzada de las presas sufragistas en la Inglaterra eduardiana), buscamos reconocer y analizar aquellas prácticas materiales que relacionan a la medicina, en tanto que disciplina de conocimiento, con la práctica del poder por parte del Estado. En nuestro análisis empleamos la metáfora dramatúrgica, en la que entendemos que determinadas formas de poder son, sobre todo, representación. O lo que es lo mismo, lo son en tanto que se ejecutan frente a un «público», de una forma determinada y con el «atrezo» adecuado. En este artículo entendemos que la forma de poder que ejerce la medicina, y que identificamos como «paternalismo», es un poder de este tipo. Para explorar su funcionamiento ponemos en relación dos fenómenos: por un lado, la estrategia paternalista, analizada a través de diversos estudios de historia de las relaciones laborales; y por otro, las prácticas materiales y los objetos con los que se realizó la alimentación forzada de las sufragistas. Nuestras conclusiones son dobles: en primer lugar, concluimos que el paternalismo (entendido como una relación de poder determinada históricamente) se encuentra embebido en la cultura material médica, hasta el punto de que no podemos pensarlo sin incluir los objetos concretos en los que se actualiza. En segundo lugar, proponemos entender las relaciones entre medicina y poder a través de la idea de «poder pastoral» desarrollado por Foucault en sus últimos años, lo que facilita una lectura distinta y potencialmente muy productiva del devenir de la disciplina durante los siglos XIX y XX.

وصف الملف: application/pdf

العلاقة: https://www.raco.cat/index.php/Dynamis/article/view/342181/433250Test

الوصول الحر: https://www.raco.cat/index.php/Dynamis/article/view/342181Test

المؤلفون: Rocca Bernal, Juan De Dios

المساهمون: Ramos La Madrid, Myriam Rosa

المصدر: Universidad Ricardo Palma. Repositorio institucional - URP

مصطلحات موضوعية: Cesárea, Partos, https://purl.org/pe-repo/ocde/ford#3.02.02Test

الوصف: Sin resumen

وصف الملف: application/pdf

العلاقة: https://hdl.handle.net/20.500.14138/7811Test

الإتاحة: https://doi.org/20.500.14138/7811Test
https://hdl.handle.net/20.500.14138/7811Test

المؤلفون: Bernal, Juan O. de M., 1540-1601, Pérez, Francisco, 15??-16?? imp.

الوصول الحر: http://hdl.handle.net/10803/337601Test

المؤلفون: Aranda Merino, Noemí, Román Hidalgo, Cristina, Pérez Bernal, Juan Luis, Callejón Mochón, Manuel, Villar Navarro, Mercedes, Fernández Torres, Rut

المساهمون: Universidad de Sevilla. Departamento de Química Analítica, Ministerio de Educación y Ciencia (MEC). España

مصطلحات موضوعية: Cationic carrier, Electromembrane extraction, Non-steroidal anti-inflammatory, Supported liquid membrane, Urine samples

الوصف: Up to now, most electromembrane extraction methods describe the use of pure organic solvents or mixtures as supported liquid membrane. However, the need to incorporate carriers in the supported liquid membrane to achieve the extraction of high polar compounds, seems to indicate that the presence of certain additives in the organic solvent may improve the extraction yield. For this reason, some studies have tried to enhance electrokinetic migration in different ways, modifying either the supported liquid membrane or even the donor solution. In this work, it has been studied and optimized an electromembrane extraction of five widely used non-steroidal anti-inflammatory drugs: salicylic acid, ketoprofen, naproxen, diclofenac and ibuprofen. The thickness and porosity of the support, the supported liquid membrane composition, the donor and acceptor phase pH, the voltage, the extraction time and the electrode configuration were optimized. supported liquid membrane was modified by adding different amounts of Aliquat®336, a cationic carrier commonly used in electromembrane extraction procedure for anionic compounds. The results compared with those obtained in the same extraction conditions using the pure organic solvent as supported liquid membrane, showed better extraction recoveries. The highest recoveries were achieved using a pH 5 donor phase and an acceptor phase at pH 12. The recoveries were within the range of 39 and 53% after 12 min extraction, using a voltage of 80 V, a stirring speed of 400 rpm and 1-nonanol modified with Aliquat®336 2.5% (w/v) as support liquid membrane. Detection and quantitation limits were within 0.02–1.0 ng mL−1 and 0.05–3.0 ng mL−1, respectively. The selected analytes were extracted by electromembrane extraction using a home-made device designed with a flat configuration. The analyses were carried out by high performance liquid chromatography with diode array and fluorescence detection and finally, applied to the analysis of human urine samples. ; Ministerio de Educación y Ciencia (MEC). ...

العلاقة: Microchemical Journal, 168, 106459.; CTM2015-67902-C-1-P; https://doi.org/10.1016/j.microc.2021.106459Test; https://idus.us.es/handle//11441/153304Test

الإتاحة: https://doi.org/10.1016/j.microc.2021.106459Test
https://idus.us.es/handle//11441/153304Test

المؤلفون: Kazakova, Julia, Villar Navarro, Mercedes, Pérez Bernal, Juan Luis, Ramos Payán, María Dolores, Bello López, Miguel Ángel, Fernández Torres, Rut

المساهمون: Universidad de Sevilla. Departamento de Química Analítica, Ministerio de Economía y Competitividad (MINECO). España, Ministerio de Ciencia e Innovación (MICIN). España, European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER)

مصطلحات موضوعية: Hollow fiber liquid phase microextraction, HF-LPME, Liquid chromatography quadrupole time-of-flight, Dinitrophenols, Human urine, Human saliva

الوصف: In this work, the determination of 2,4-, 2,5- and 2,6-dinitrophenols and the identification of some of their metabolites in human urine and saliva is proposed. A three phase hollow fiber based liquid phase microextraction prior to ultra-high performance liquid chromatography coupled to quadrupole time-of-flight mass spectrometry allowed low detection and quantitation limits of the target analytes, as well as the investigation and tentatively identification of some metabolites by accurate mass full-spectrum measurements. The chromatographic separation was accomplished on an Acquity BEH C18 column (50 mm × 2.1 mm i.d., 1.7 μm particle size) at 25 ºC using water and acetonitrile (with 0.1 % (v/v) formic acid) 20:80 v/v as mobile phase, at a flow rate of 0.5 mL/min in isocratic elution mode for 5 min. Hollow fiber liquid phase microextraction was achieved at donor phase pH 2, acceptor phase pH 13 and dihexylether as supported liquid membrane. Under the optimal conditions, detection limits for 2,4-, 2,5- and 2,6-dinitrophenol, respectively, were 0.18 μg·L-1, 0.38 μg·L-1 and 0.14 μg·L-1 in urine samples and 0.32 μg·L-1, 0.67 μg·L-1 and 0.24 μg·L-1 in saliva samples. The proposed methodology was applied on urine and saliva samples from laboratory staff likely to be or not occupationally exposed to dinitrophenols, finding quantitative levels of 2,4- and 2,6-dinitrophenol and identifying some metabolites previously reported in literature. ; Ministerio de Economía y Competitividad (MINECO). España CTM2015-67902-C-1-P ; Ministerio de Ciencia e Innovación (MICIN). España GC2018-096608-B-C22 ; European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER) GC2018-096608-B-C22

العلاقة: Microchemical journal, 166, 106193.; CTM2015-67902-C-1-P; GC2018-096608-B-C22; https://doi.org/10.1016/j.microc.2021.106193Test; https://idus.us.es/handle//11441/153302Test

الإتاحة: https://doi.org/10.1016/j.microc.2021.106193Test
https://idus.us.es/handle//11441/153302Test

المؤلفون: Ríos-Reina, Rocío, Pérez Bernal, Juan Luis, Azcárate, Silvana M., Callejón Fernández, Raquel María

المساهمون: Universidad de Sevilla. Departamento de Nutrición y Bromatología, Toxicología y Medicina Legal, Universidad de Sevilla. Departamento de Química Analítica, Universidad de Sevilla. AGR167: Calidad y Bioactividad de Alimentos Vegetales y Fermentados, Universidad de Sevilla. FQM291: Análisis Químico, European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER), Junta de Andalucía

مصطلحات موضوعية: Fortified wine, Protected designation of origin, Multidimensional fluorescence, PARAFAC, Classification

الوصف: Fortified wines covered by a Protected Designation of Origin (PDO) are high-quality products appreciated by consumers, whose diversity has increased in recent years, leading to an increased vulnerability to fraud. In this work, for the first time, an excitation-emission fluorescence spectroscopy method combined with two chemometric approaches was developed for the characterization and authentication of PDO fortified wines. A visual assessment of fluorescence landscapes pointed out different trends. The excitation-emission matrix (EEM) was decomposed using Parallel Factor Analysis (PARAFAC) for the extraction of potential fluorophores, or unfolded, and then, the resulting matrices were subjected to Principal Component Analysis (PCA) and Partial Least Squares-Discriminant Analysis (PLS-DA). Both approaches were able to discriminate the wine type within each PDO, the PDO within a wine type, and the production process. The proposed analytical and chemometric tools could be used as an alternative control method for a rapid screening of Spanish PDO fortified wines.

العلاقة: FEDER 2014-2020 P-2021/1638; US-1380830; https://www.sciencedirect.com/science/article/pii/S0026265X24001796Test; https://idus.us.es/handle//11441/157296Test

الإتاحة: https://idus.us.es/handle//11441/157296Test

المؤلفون: Ríos-Reina, Rocío, Ocaña González, Juan Antonio, Azcárate, Silvana M., Pérez Bernal, Juan Luis, Villar Navarro, Mercedes, Callejón Fernández, Raquel María

المساهمون: Universidad de Sevilla. Departamento de Nutrición y Bromatología, Toxicología y Medicina Legal, Universidad de Sevilla. Departamento de Química Analítica, Junta de Andalucía

مصطلحات موضوعية: Calibration, Classification, Fluorescence, Grape-must caramel, Protected Designation of Origin, Wine vinegars

الوصف: A practice in wine vinegar production is the addition of grape-must caramel to correct and unify the final colour of different batches. Although current legislation allows it, the effect in vinegars’ quality has not been studied yet and it can become a fraud when it is used to simulate the effect of a longer ageing. Therefore, the aim of this work was to assess multidimensional fluorescence as a cost-effective and fast technique for detecting and quantifying grape-must caramel in vinegars. Different amounts of grape-must caramel and multivariate data analysis, as Parallel Factor Analysis (PARAFAC), N-way partial least squares and partial least squares discrimination and regression (NPLS-DA, PLS-DA and NPLS) were studied. Triangle sensory test was also performed. Results demonstrated the ability of this methodology in the detection and quantification of grape-must caramel (low prediction errors, RMSEP0.24) and the effects that grape-must caramel has upon a PDO vinegar’s final quality ; Junta de Andalucía P12-AGR-1601

العلاقة: Food Chemistry, 287, 115-125.; P12-AGR-1601; https://doi.org/10.1016/j.foodchem.2019.02.008Test; https://idus.us.es/handle//11441/153295Test

الإتاحة: https://doi.org/10.1016/j.foodchem.2019.02.008Test
https://idus.us.es/handle//11441/153295Test

المؤلفون: López Pérez, Gracia, Pérez Bernal, Juan Luis, Flores Alés, Vicente, Martín del Río, Juan Jesús, Borreguero, Mercedes, Alducín Ochoa, Juan Manuel

المساهمون: Universidad de Sevilla. Departamento de Química Analítica, Universidad de Sevilla. Departamento de Construcciones Arquitectónicas II (ETSIE), Ministerio de Ciencia e Innovación (MICIN). España

مصطلحات موضوعية: Crack, Digital image processing, Mortar, Skeletonisation

الوصف: Image analysis techniques can be used to detect and interpret the degradation processes that a material undergoes and to help identify the causes and mechanisms of degradation. Structures and morphological changes are also analysed to establish hypotheses about physical changes. Together with complementary analytical techniques, chemical and mineralogical changes can be evaluated. The methodological process consists of a sequential simplification of the initial micrograph: segmentation of the image, cleaning and isolation of the crack from associated elements, and crack skeletonisation. This method allows the previous image to be processed, thus successfully isolating the microcracks. It is also valid for their quantification. ; Ministerio de Ciencia e Innovación PID2020-115843RB-I00

العلاقة: Boletin de la Sociedad Española de Ceramica y Vidrio.; PID2020-115843RB-I00; https://doi.org/10.1016/j.bsecv.2023.10.004Test; https://idus.us.es/handle//11441/156910Test

الإتاحة: https://doi.org/10.1016/j.bsecv.2023.10.004Test
https://idus.us.es/handle//11441/156910Test

المؤلفون: Colmenero-Fonseca, Fabiola, Rodríguez Pérez, Ramiro, Perlaza Rodríguez, Juana, Palomino Bernal, Juan Francisco, Cárcel-Carrasco, Javier

المساهمون: Universitat Politècnica de València. Escuela Técnica Superior de Gestión en la Edificación - Escola Tècnica Superior de Gestió en l'Edificació, European Commission, Ministerio de Universidades, Universitat Politècnica de València

مصطلحات موضوعية: BIM, Multi-scale analysis of society and ecosystem metabolism (MuSIASEM), Circular urbanism, Green building, Materials catalog, CONSTRUCCIONES ARQUITECTONICAS

الوصف: [EN] This article explores how the construction sector can significantly contribute to minimizing its environmental impact through reuse and recycling practices, in rehabilitation or new construction projects. This research focuses on implementing BIM methodology alongside biomaterials, 3D modeling, and digitization in compliance with the Green Building Code. Two case studies located in Jalisco and Queretaro (Mexico) are examined through a comparative analysis. The simulations are carried out in different geographical areas with two construction systems that allow us to see the output similarities. The results show the clear advantages of biomaterials over traditional materials such as concrete. The construction materials are shown to determine their operational energy consumption. From an economic point of view, this study supports data regarding lower energy costs, and a significant reduction in CO2 emissions is observed. In conclusion, both the models and simulations, along with the Toolkit, highlight the benefits of biomaterials over conventional industrial materials. ; This research was funded by UPV, Ministry of Universities, Recovery, Transformation, and Resilience Plan Funded by the European Union Next Generation EU and Postdoctoral Research (PAIDPD-22). The authors acknowledge the full financial support for this research provisioned by María Zambrano (UPV, Ministry of Universities, Recovery, Transformation, and Resilience Plan Funded by the European Union Next Generation EU) of the Institute of Materials Technology of the Polytechnic University of Valencia (Spain). ; Colmenero-Fonseca, F.; Rodríguez Pérez, R.; Perlaza Rodríguez, J.; Palomino Bernal, JF.; Cárcel-Carrasco, J. (2024). Sustainable Built Environments: Building Information Modeling, Biomaterials, and Regenerative Practices in Mexico. Buildings. 14(1). https://doi.org/10.3390/buildings14010202Test ; 14 ; 1

العلاقة: Buildings; info:eu-repo/grantAgreement/UPV//PAIDPD-22/; https://doi.org/10.3390/buildings14010202Test; urn:issn:2075-5309; http://hdl.handle.net/10251/203766Test

الإتاحة: https://doi.org/10.3390/buildings14010202Test
http://hdl.handle.net/10251/203766Test