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As Husserl announced with emphasis on the final words of his famous Vienna conference on (May 10, 1935), “the crisis of European existence has only two exits: the decadence of Europe, alienated from its own rational sense of life, [and thus] the fall into the hatred of spirit and barbarism, or the rebirth of Europe from the spirit of philosophy through a heroism of reason that will definitely outgrow naturalism” (Husserl 1991: 358). There are many elements that lead us to think that the advanced postmodern Europe -and with it also the Spanish society- continues today in that dangerous situation, characterized by a radical distrust in reason that can in the mid-term return us to barbarism. In my words I would like, 1) to first briefly describe this situation; 2) second, to outline a more open notion of rationality in terms of reasonableness; (3) thirdly, to give account of certain objections to the uniformity of reason and pluralism; and 4) to end with some practical recommendations to be more reasonable today., Como anunció Husserl con énfasis en las palabras finales de su famosa conferencia de Viena (10 de mayo de 1935), “la crisis de la existencia europea sólo tiene dos salidas: la decadencia de Europa, alienada de su propio sentido racional de la vida, [y por tanto] la caída en el odio del espíritu y la barbarie, o el renacimiento de Europa desde el espíritu de la filosofía mediante un heroísmo de la razón que supere definitivamente el naturalismo” (Husserl, 1991: 358). Son muchos los elementos que llevan a pensar que la avanzada Europa postmoderna -y con ella también la sociedad española- sigue hoy en aquella peligrosa situación, caracterizada por una radical desconfianza en la razón que puede a medio plazo devolvernos a la barbarie. En mis palabras querría, 1.) describir brevemente esta situación; 2.) esbozar una noción más abierta de racionalidad en términos de razonabilidad; 3.) dar cuenta de algunas objeciones planteadas a propósito de la uniformidad de la razón y del pluralismo; 4.) para terminar con unas recomendaciones prácticas para ser más razonables hoy.

The objective of this study was to analyze the prevalence of overweight, obesity, physical activity levels, and self-esteem of the school children population of San Pedro Sula. The sample was 825 children aged 9-13 years, which were divided into 416 girls and 409 boys. Measurements of BMI (kg/H^2), Physical Activity level (PAQ-C) and Self-esteem (LAWSEQ) were made. A factorial analysis (ANOVA) was performed to observe differences between groups and the Pearson correlation for the study of the relationship of variables with 95% confidence intervals. It was found that 79.8% are in a healthy weight state; 14.8% in overweight and obesity, and 5.3% in malnutrition. It was also found that a moderate level of physical activity predominates in most of the children and a low self-esteem level in 46.9% and average self-esteem of 50.5%. Another finding was that the level of physical activity has a highly positive correlation with sex, being higher in boys than in girls; also physical activity has a very high positive correlation (r = 0.81, p = 0.001) with self-esteem. Our results indicate that children in Honduras show a greater practice of physical activity by children than that of girls. In addition, it was found that a higher level of physical activity could be associated with better self-esteem in children., El objetivo de este estudio fue analizar la prevalencia de sobrepeso, obesidad, niveles de actividad física y autoestima de la población escolar de San Pedro Sula. La muestra fue de 825 escolares con edades entre 9-13 años, los cuales fueron divididos en 416 mujeres y 409 hombres. Se realizaron mediciones del IMC (Kg/H^2), nivel de actividad física (PAQ-C) y autoestima (LAWSEQ). Se realizó un análisis factorial (ANOVA) para observar diferencias entre grupos y la correlación de Pearson para el estudio de relación de variables con intervalos de confianza del 95 %. Se encontró que el 79.8 % se encuentra en un estado de peso saludable; un 14.8 % en sobrepeso y obesidad y un 5.3 % en desnutrición, un nivel de actividad física moderado predomina en la mayoría de escolares, un nivel de autoestima bajo en 46.9 % y autoestima promedio de 50.5 %; también se mostró que el nivel de actividad física tiene correlación alta positiva con el sexo, siendo mayor en los escolares hombres que en las mujeres, también la actividad física tiene correlación positiva muy alta (r=0.81; p=0.001) con la autoestima. Nuestras conclusiones indican que se muestra una mayor práctica de actividad física por los escolares hombres de Honduras que por parte de las mujeres. Además, se encontró que un mayor nivel de realización de actividad física podría estar asociado a una mejor autoestima en los niños.

As Husserl announced with emphasis on the final words of his famous Vienna conference on (May 10, 1935), “the crisis of European existence has only two exits: the decadence of Europe, alienated from its own rational sense of life, [and thus] the fall into the hatred of spirit and barbarism, or the rebirth of Europe from the spirit of philosophy through a heroism of reason that will definitely outgrow naturalism” (Husserl 1991: 358). There are many elements that lead us to think that the advanced postmodern Europe -and with it also the Spanish society- continues today in that dangerous situation, characterized by a radical distrust in reason that can in the mid-term return us to barbarism. In my words I would like, 1) to first briefly describe this situation; 2) second, to outline a more open notion of rationality in terms of reasonableness; (3) thirdly, to give account of certain objections to the uniformity of reason and pluralism; and 4) to end with some practical recommendations to be more reasonable today., Como anunció Husserl con énfasis en las palabras finales de su famosa conferencia de Viena (10 de mayo de 1935), “la crisis de la existencia europea sólo tiene dos salidas: la decadencia de Europa, alienada de su propio sentido racional de la vida, [y por tanto] la caída en el odio del espíritu y la barbarie, o el renacimiento de Europa desde el espíritu de la filosofía mediante un heroísmo de la razón que supere definitivamente el naturalismo” (Husserl, 1991: 358). Son muchos los elementos que llevan a pensar que la avanzada Europa postmoderna -y con ella también la sociedad española- sigue hoy en aquella peligrosa situación, caracterizada por una radical desconfianza en la razón que puede a medio plazo devolvernos a la barbarie. En mis palabras querría, 1.) describir brevemente esta situación; 2.) esbozar una noción más abierta de racionalidad en términos de razonabilidad; 3.) dar cuenta de algunas objeciones planteadas a propósito de la uniformidad de la razón y del pluralismo; 4.) para terminar con unas recomendaciones prácticas para ser más razonables hoy.

As Husserl announced with emphasis on the final words of his famous Vienna conference on (May 10, 1935), “the crisis of European existence has only two exits: the decadence of Europe, alienated from its own rational sense of life, [and thus] the fall into the hatred of spirit and barbarism, or the rebirth of Europe from the spirit of philosophy through a heroism of reason that will definitely outgrow naturalism” (Husserl 1991: 358). There are many elements that lead us to think that the advanced postmodern Europe -and with it also the Spanish society- continues today in that dangerous situation, characterized by a radical distrust in reason that can in the mid-term return us to barbarism. In my words I would like, 1) to first briefly describe this situation; 2) second, to outline a more open notion of rationality in terms of reasonableness; (3) thirdly, to give account of certain objections to the uniformity of reason and pluralism; and 4) to end with some practical recommendations to be more reasonable today., Como anunció Husserl con énfasis en las palabras finales de su famosa conferencia de Viena (10 de mayo de 1935), “la crisis de la existencia europea sólo tiene dos salidas: la decadencia de Europa, alienada de su propio sentido racional de la vida, [y por tanto] la caída en el odio del espíritu y la barbarie, o el renacimiento de Europa desde el espíritu de la filosofía mediante un heroísmo de la razón que supere definitivamente el naturalismo” (Husserl, 1991: 358). Son muchos los elementos que llevan a pensar que la avanzada Europa postmoderna -y con ella también la sociedad española- sigue hoy en aquella peligrosa situación, caracterizada por una radical desconfianza en la razón que puede a medio plazo devolvernos a la barbarie. En mis palabras querría, 1.) describir brevemente esta situación; 2.) esbozar una noción más abierta de racionalidad en términos de razonabilidad; 3.) dar cuenta de algunas objeciones planteadas a propósito de la uniformidad de la razón y del pluralismo; 4.) para terminar con unas recomendaciones prácticas para ser más razonables hoy.

[ES] Este Trabajo de Final de Grado de la Universidad Politécnica de Valencia consiste en el estudio de viabilidad de la apertura de un Box Crossfit en la localidad valenciana de Almussafes. Un Box Crossfit es lugar donde se practica el Crossfit, es decir, un sistema de entrenamiento de acondicionamiento y fuerza basado en ejercicios funcionales y variados practicados a una alta intensidad., [EN] This Final Degree Project of the Polytechnic University of Valencia consists of the feasibility study of the opening of a Box Crossfit in the valencian town of Almussafes.A Box Crossfit is a place where Crossfit is practiced. that means, a conditioning and strengh training system based on a functional and varied high-intensity exercises.

Different ferrosilicate samples have been prepared with varying degrees of crystallinity, porous texture, and speciation of the Fe sites by both hydrothermal and sol–gel procedures: Fe-silicalite-1 with microcrystals (2–10 µm) and nanocrystals (180 nm), Fe-containing composite material consisting of silicalite-1 and amorphous silica, and two samples of mesoporous Fe-containing amorphous silica Fe–SiO2. The resulting solids have been tested for their potential as organic pollutants removal under Fenton-like conditions in heterogeneous catalytic wet peroxide oxidation of phenol and clarithromycin lactobionate. Our results indicate that the three aforementioned parameters show a strong interplay towards the abatement of pollutants in liquid phase. Thus, samples with high crystallinity show an improved performance in the oxidation of organic contaminants over amorphous samples in which the Fe speciation is very well controlled.

Este proyecto tuvo como principal objetivo la caracterización geológica y geomecánica de la mina San Joaquín, con el fin de diseñar un método de explotación diferente al de tajo largo con derrumbe dirigido que conlleve a disminuir, evitar o mitigar el fenómeno de subsidencia; incluyendo también la búsqueda de un equilibrio entre una alta tasa de recuperación y un alto factor de seguridad que permitan efectuar de manera segura y económicamente factible la extracción del mineral -- La base fundamental de los estudios consistió en la descripción y el análisis de las propiedades físicas y mecánicas del macizo rocoso mediante la recopilación de información geológica y geotécnica a partir de ensayos de compresión simple en los cuales se pueda identificar y caracterizar la resistencia de los mantos de carbón y de la roca encajante, obteniendo como resultado final la construcción de un modelo geológico y geomecánico que permitan determinar el comportamiento del macizo rocoso ante los esfuerzos verticales que genera una labor minera, y a partir de allí calcular las dimensiones ideales para el diseño de explotación por medio del método cámaras y pilares, The main objective of this project was the geological and geomechanical characterization of the San Joaquín mine, with the aim of designing a different exploitation method that leads to diminish, avoid or mitigate the subsidence phenomenon; It also has a relationship between a recovery rate and a high safety factor that allows a safe and economically feasible extraction of the mineral -- The fundamental basis of the studies consists of the description and analysis of the physical and mechanical properties of the rock mass by collecting geological and geotechnical information from simple compression tests that allows to identify and characterize the resistance of the coal beds and the roof rock, obtaining as a final result the construction of a geological and geomechanical model that determines the behavior of the rock mass in front of the vertical efforts generated by mining work, since all the ideal dimensions for the design of the exploitation by means of the method rooms and pillars

Multiwall carbon nanotubes (CNTs) decorated with cobalt oxide (CoOx) nanoparticles (NPs) are prepared in various synthesis conditions to investigate their capability as oxygen reduction reaction (ORR) catalysts for fuel cells in alkaline media. The synthesis conditions include the use of protecting, reducing or complexing agents and heat treatment. Higher ORR activity is possible for smaller size of Co NPs catalysts due to the enlarged interfaces between Co species and CNTs. The addition of polyvinylpyrrolidone (PVP) as protecting agent and NaBH4 during the preparation procedure is necessary for obtaining the highest activity since it favors the formation of lower oxidation states for Co species and the incorporation of N groups which improve ORR activity. CNTs loaded with only 1 wt.% of Co NPs prepared by a facile method using PVP, NaBH4 and subsequent heat treatment at 500 °C under N2 atmosphere, demonstrates both similar catalytic activity and stability than Pt/Vulcan (20 wt.% Pt on Vulcan). The synergic chemical coupling effects between CNTs and CoOx NPs and the presence of carbon material with pyridinic N and quaternary N groups formed from the protecting agent decomposition, seem to be the main factors responsible for the remarkable electrocatalytic activity.

Esta tesis doctoral se ha centrado en la síntesis y el estudio de diferentes materiales que se aplican a la preparación de catalizadores microestructurados. Este trabajo incluye la preparación de rellenos de sílice robustos mediante una metodología nueva. En general los catalizadores están basados en sílice dopados con Fe o Ti y nanopartículas de metal noble cargadas en sílice. Todos estos catalizadores han sido probados en diferentes reacciones catalíticas tales como reacción de epoxidación de propileno en fase gaseosa, generación de H2 en fase líquida y oxidación selectiva de CO para la purificación de corrientes de H2.

Simple, cost-effective, and reproducible devices have been prepared for the detection of H2 at room temperature. Pd, Cu and bimetallic Cu-Pd nanoparticles (prepared by the reduction-by-solvent method) have been loaded on a MWCNT deposit avoiding the use of surfactants or complicated techniques. The devices based on pure Pd nanoparticles have shown a high H2 sensitivity in the studied H2 concentration range with low response and recovery times. However, the addition of Cu in the metallic nanoparticles does not result in a considerable improvement. Furthermore, the Pd and Cu-Pd/MWCNTs-based sensors have kept part of their H2 sensitivity when they have been tested in an O2-depleted atmospheres, which is an altogether new finding compared to Pd-based systems. Through these experiments it has been possible to conclude how the main H2 detection mechanism is the electron transfer from the nanoparticles (when the PdHx is formed) to the carbon nanotubes.

Many catalytic applications use conventional heating to increase the temperature to allow the desired reaction. A novel methodology is presented for the preparation of magnetic zeolite-based catalysts, allowing more efficient radiofrequency heating. These nanoreactors are tested in the isomerisation of citronellal with successful results and without any apparent deactivation.

In the propylene epoxidation reaction with Fe-SiO2 catalysts the presence of iron oxide particles has a detrimental effect due to the total combustion of propylene on these iron species. Thus, the complete elimination of the iron oxide particles is presented as a preliminary strategy in order to increase the selectivity towards propylene oxide in iron-based catalysts. In this sense, a simple post-treatment of the catalysts with alkali or alkaline-earth elements (such as K or Ca, respectively) has proven effective in the total elimination of these iron oxide particles. Furthermore, the addition of K and Ca has modified the physico-chemical properties of the catalysts, decreasing their superficial acidity and (for higher K or Ca loadings) masking/blocking the active sites responsible for the catalytic reaction. With all this, it is shown that K has a higher efficiency removing the iron oxide particles compared with Ca (for the same molar ratios) and that a higher amount of K (compared to Fe) is required for the complete elimination of the iron oxide particles. A considerable propylene oxide selectivity enhancement (up to 65%) has been obtained for the K-promoted Fe0.005SiO2 and Fe0.01SiO2 catalysts using O2 as sole oxidant.

In this article I pay attention to some of the reviews that Reason in Common Sense of George Santayana received from some of the most outstanding philosophers of his time: E. Albee, J. Dewey, A.W. Moore, G. E. Moore, C. S. Peirce and F. C S. Schiller. My paper is arranged in six sections: 1) Biographical circumstances of Reason in Common Sense; 2) Peirce’s reading of Santayana; 3) The reviews of John Dewey; 4) Other readers of Reason in Common Sense; 5) Santayana returns on his book; and, fi nally, by way of conclusion, 6) Reading today Reason in Common Sense., En este artículo presto atención a algunas de las recensiones que cosechó Reason in Common Sense de George Santayana por parte de algunos de los más destacados fi lósofos de su tiempo: E. Albee, J. Dewey, A. W. Moore, G. E. Moore, C. S. Peirce y F. C. S. Schiller. Mi exposición está organizada en seis secciones: 1) Circunstancias biográfi cas de Reason in Common Sense; 2) La lectura que Peirce hace de Santayana; 3) Las recensiones de John Dewey; 4) Otros lectores de Reason in Common Sense; 5) Santayana vuelve sobre su libro; y, fi nalmente, a modo de conclusión, 6) Leer hoy La razón en el sentido común.

Theater groups in Puebla have been slowly but steadily proliferating shortly after the academy of dramatic art at the Autonomous University of Puebla (BUAP). This paper aimed to point out some adverse environments that are considered determinants to counteract the performance of individuals in dramatic art. The response, faced with this unfavorable context, has been a defensive and survival reaction that manifests itself through the formation of groups, in order to regain autonomy, meaning and identity. Through the deduction, specialists in behavior of the mass society, born in postmodernity, are analyzed who criticize the reasons of life focused on the consumption. This general characteristic rests in the poblana society to the detriment of aspirants and professionals of dramatic art of the BUAP, by a clear rejection to their expectations as artists. In reviewing some consumer society tendencies, such as obtaining material goods, devaluing the arts to the sciences and technology or public policies, all of which constitutes an obstacle to achieving the realization of the subject, (the direct experience in the work done with theater groups) that the initiatives for the grouping seek the vindication of the students as individuals. This result, as one might suppose, does not cover the economic requirements, but the need to find that sense of existence and identity that has been lost by the inertia of consumption. In contrast to a consumer society that imposes economic, axiological and aesthetic perceptions, theatrical grouping is created around the small spaces (formal and alternative) that allow to claim the profession, resisting the norms and culture that prevail. From being possible actors or directors dedicated, in addition, to other activities and with multiple identities, the academization of the arts has gradually managed to combine the personal fulfillment and the singularity of the subject. In this way, graduates of BUAP in dramatic art (1997) become present i, Os grupos teatrais de Puebla vêm proliferando lenta mas firmemente logo após a academia de arte dramática da Universidade Autônoma de Puebla (BUAP). O objetivo deste trabalho foi apontar alguns ambientes adversos que se acredita serem decisivos para contrariar o desempenho de indivíduos em arte dramática. A resposta, diante desse contexto desfavorável, tem sido uma reação defensiva e de sobrevivência que se manifesta através da formação de grupos, a fim de recuperar autonomia, significado e identidade. Através da dedução, são analisados especialistas em comportamento da sociedade de massa, surgidos na pós-modernidade, que criticam as razões da vida focadas no consumo. Esta característica geral reside na sociedade populana em detrimento dos aspirantes e profissionais da arte dramática do BUAP, por uma clara rejeição às suas expectativas como artistas. Ao rever algumas tendências da sociedade de consumo, como a obtenção excessiva de bens materiais, a desvalorização das artes para as ciências e a tecnologia ou políticas públicas, o que constitui um obstáculo para a realização da matéria, pela experiência direta no trabalho realizado com grupos de teatro) que as iniciativas para o agrupamento buscam a reivindicação dos alunos como indivíduos. Este resultado, como se poderia supor, não abrange os requisitos econômicos, mas a necessidade de encontrar essa sensação de existência e identidade perdida pela inércia do consumo. No contexto de uma sociedade de consumo que impõe percepções econômicas, axiológicas e estéticas, o agrupamento teatral é construído em torno dos pequenos espaços (formais e alternativos) que permitem reivindicar a profissão, resistindo as normas e a cultura que prevalecem. De ser atores ou eventuais diretores dedicados, além disso, a outras atividades e com múltiplas identidades, a academização das artes, gradualmente, conseguiu combinar a realização pessoal e a singularidade do sujeito. Desta forma, os graduados da BUAP em arte dramática (1997) tornam, Los grupos teatrales en Puebla han ido proliferando lenta, pero de forma constante, poco tiempo después de la academización del arte dramático en la Benemérita Universidad Autónoma de Puebla (BUAP). Este trabajo tuvo como propósito señalar algunos entornos adversos que se creen determinantes para contrarrestar la realización de los individuos en el arte dramático. La respuesta, frente a dicho contexto desfavorable, ha sido una reacción defensiva y de sobrevivencia que se manifiesta a través de la formación de grupos, con el fin de recobrar autonomía, sentido e identidad.A través de la deducción, se analiza a especialistas en conductas de la sociedad de masas, surgidas en la posmodernidad, quienes critican las razones de vida centradas en el consumo. Dicha característica general recae en la sociedad poblana en detrimento de los aspirantes y profesionistas de arte dramático de la BUAP, por un claro rechazo a sus expectativas como artistas. Al revisar algunas tendencias de la sociedad de consumo, como la obtención excesiva de bienes materiales, la desvalorización de las artes ante las ciencias y la tecnología o las políticas públicas, todo lo cual constituye un obstáculo para lograr la realización del sujeto, se constata (por la experiencia directa en el trabajo realizado con grupos de teatro) que las iniciativas para el agrupamiento buscan la reivindicación de los estudiantes como individuos. Este resultado, como se podría suponer, no cubre los requerimientos económicos, sino a la necesidad de encontrar ese sentido de existencia y de identidad que se ha perdido por la inercia del consumo. En contracorriente de una sociedad de consumidores que impone percepciones económicas, axiológicas y estéticas, la grupalidad teatral se gesta en torno a los pequeños espacios (formales y alternativos) que permiten reivindicar la profesión, resistiendo las normas y cultura que imperan. De ser actores o directores eventuales dedicados, además, a otras actividades y con múltiples ident

Palladium nanoparticles (Pd NPs) were synthesized by the reduction-by-solvent method using polyvinylpirrolidone (PVP) as capping agent. The nonstatic interaction between PVP and the metallic surface may change the properties of the NPs due to the different possible interactions, through either the O or N atoms of the PVP. In order to analyze these effects and their repercussions in their catalytic performance, Pd NPs with various PVP/Pd molar ratios (1, 10, and 20) were prepared, deposited on silica, and tested in the formic acid decomposition reaction. The catalytic tests were conducted using catalysts prepared by loading NPs with three different time lapses between their purification and their deposition on the silica support (1 day, 1 month, and 6 months). CO adsorption, FTIR spectroscopy, XPS, and TEM characterization were used to determine the accessibility of the Pd NPs surface sites, the electronic state of Pd, and the average NPs size, respectively. The H2 production from the formic acid decomposition reaction has a strong dependence on the Pd surface features, which in turn are related to the NPs aging time due to the progressive removal of the PVP.

Pd and CoxPd1−x nanoparticles (NPs), synthesized using the reduction by solvent method, were loaded on SiO2 and Ti–SiO2 supports. The resulting catalysts were tested in the ammonia-borane decomposition reaction under dark and UV-vis conditions. The synergistic promotion by Co (in the NPs) and Ti (in the support), combined with the UV-vis light irradiation, enhanced the catalytic activity showing very promising TOFs values for this kind of catalysis, from 1.53 to 49.5 mol H2 per mol Pd per min.

This paper focuses on the synthesis of nanocomposite materials, TiO2/SAPO-34, using the sol–gel method, which involves preparing a mixture between as-synthesized or calcined SAPO-34 zeolite and TiO2 gel under hydrothermal crystallization and then calcining it at 400 °C for the formation of the TiO2 anatase phase. The structural and textural features of the obtained materials were determined by various physico-chemical techniques such as thermogravimetric analysis, X-ray diffraction, scanning electronic microscopy, nitrogen sorption at 77 K, energy dispersive X-ray analysis and ultraviolet–visible spectrometry. The DRX results showed that calcination at 400 °C of the mixture between the calcined SAPO-34 and TiO2 gel led to the collapse of the original framework of zeolite, but formed the anatase TiO2 in a nano-spherical morphology; however, the use of as-synthesized SAPO-34 supports provides a mixture phase between SAPO-34 and TiO2 anatase after calcination. The photocatalytic properties of the SAPO-34/TiO2 and TiO2-type materials were tested for the removal of methylene blue (MB) dye. The MB degradation proved to increase as a function of contact time, catalyst mass and the initial concentration of MB.

Well dispersed iron catalysts were synthesized in silica (Fe0.0XSiO2) by a one-step synthesis procedure. These materials were tested in the propylene epoxidation reaction with gaseous O2. The influence of the iron metal loading on the iron incorporation and distribution in the support (both influenced by the synthetic procedure) were thoroughly studied (conversion, generation and selectivity). Electron Microscopy and UltraViolet–Visible (UV–VIS), Raman and Fourier Transform Infrared Spectroscopy (FTIR) spectroscopy techniques were used to analyze the iron distribution in the catalysts and to probe its incorporation into the silica framework. In situ FTIR was also used to analyze the interaction between propylene and iron-based catalysts. Computational calculations considering a single-site iron catalyst incorporated into the silica structure show a possible interaction between O2 and the incorporated iron atom and the olefin bond and the acidic proton neighboring the iron species which favor the reaction between the two molecules near the iron atom.

The aim of this article is to describe in some detail the actual relationship between Charles S. Peirce and Alfred N. Whitehead, paying particular attention to the Peircean notions of science and metaphysics, with the conviction that this contrast can help to understand better the scope and depth of C. S. Peirce’s thought, El objetivo de este artículo es describir con cierto detalle las relaciones efectivas entre Charles S. Peirce y Alfred N. Whitehead, poniendo particular atención en las nociones peirceanas de ciencia y de metafísica, con la convicción de que este contraste puede ayudar a captar mejor el alcance y la hondura del pensamiento de C. S. Peirce.

This article demonstrates how feminism welcomed and was influenced by the pragmatism of John Dewey. While in real terms his impact on European feminism has been minimal, this was not the case in contemporary America. In this article we study both how Dewey’s ideas were received amongst American feminists, as well as certain aspects of his thinking that could be enormously useful in present-day debates between critical and postmodern feminists. We compare the Deweyan and feminist arguments against the traditional dualisms that acted as philosophical support for social inequality, paying particular attention to mind–body dualism, and the consequent undervaluation of physical and emotional wellbeing. We also show that John Dewey’s proposals were, in fact, more radical than those of the feminists of the day. Indeed, democracy has to be understood as a way of life that affects every dimension of experience, and is crucial to the personal and social growth that enables the unjust social inequalities between men and women to be overcome., El objetivo de este artículo es mostrar la influencia y acogida del pragmatismo de John Dewey en el feminismo contemporáneo. Aunque su incidencia efectiva ha sido escasa en el feminismo europeo, no ha sido así en el norteamericano. En este trabajo se estudian tanto la recepción del pensamiento de Dewey en el feminismo norteamericano como algunas claves de su pensamiento que pueden ser de extraordinaria utilidad en el debate feminista actual para mediar en las polémicas entre feminismo crítico y feminismo postmoderno. Se analizan las críticas de Dewey y del feminismo al dualismo tradicional como soporte filosófico de la desigualdad social, prestando particular atención a la escisión mente-cuerpo y a la consecuente minusvaloración del cuerpo y de las emociones. Como conclusión, se destaca que la propuesta de John Dewey es más radical que la de los feminismos al uso, pues la democracia ha de entenderse como un modo de vida que afecta a todas las dimensiones de la experiencia y de la que depende el crecimiento personal y social que supere las injustas desigualdades sociales entre varones y mujeres.

Novel hierarchical SiO2 monolithic microreactors loaded with either Pd or Pt nanoparticles have been prepared in fused silica capillaries and tested in the Preferential Oxidation of CO (PrOx) reaction. Pd and Pt nanoparticles were prepared by the reduction by solvent method and the support used was a mesoporous SiO2 monolith prepared by a well-established sol–gel methodology. Comparison of the activity with an equivalent powder catalyst indicated that the microreactors show an enhanced catalytic behavior (both in terms of CO conversion and selectivity) due to the superior mass and heat transfer processes that take place inside the microchannel. TOF values at low CO conversions have been found to be ∼2.5 times higher in the microreactors than in the powder catalyst and the residence time seems to have a noticeable influence over the selectivity of the catalysts designed for this reaction. The Pd and Pt flexible microreactors developed in this work have proven to be effective for the CO oxidation reaction both in the presence and absence of H2, standing out as a very interesting and suitable option for the development of CO purification systems of small dimensions for portable and on-board applications.

Este artículo analiza la situación de vulnerabilidad en lo educativo de la población en edad escolar de la comuna 5 en la zona norte de Guadalajara de Buga, siguiendo el enfoque de la vulnerabilidad, en especial los argumentos propuestos por Rubén Kaztman y Gustavo Busso, y la perspectiva de las capacidades desarrollado por Martha Nussbaum. En la parte descriptiva se utilizan las estadísticas sobre homicidios y violencia intrafamiliar, así como los registros sobre matrícula en educación preescolar, primaria, básica secundaria y media, al igual que la cobertura educativa en la ciudad. Además, se incorporan los resultados de la encuesta aplicada a una muestra de docentes en la institución educativa que se encuentra en la zona objeto de estudio.