175 research outputs found
Alexander of Aphrodisias and De Interpretatione: The Case of the Proposition
No full textThis article considers a passage in Alexander of Aphrodisias' commentary on the Prior Analytics (in APr., 10, 13-28) concerning the definition of irporaut; (premiss or proposition). Its interest lies in the fact that Alexander establishes a very articulated relationship between the defmition of /cookout; that we find in Aristotle's Prior Analytics (24a16-17) and that of arcotpavrixo; kayo; (proposition) in De interpretatione (4, 17a2-3). Nonetheless, the author aims to demonstrate that this relationship is problematic and unnecessary because the definition of /cookout; in Prior Analytics is in fact independent from the definition of eurocavruce; koyoc. However, it is also the author's intention to show why Alexander does this
Substances and relatives in Aristotle's categories (chapter 7)
No full textThe chapter on relatives in Categories (chap. 7) can easily be divided into three sections. The first gives an initial definition of relatives (6a36-37), the second deals with the properties fo relatives (6b15-8a12), and the third raises an aporia prompting Aristotle to propose a new definition of relatives, which apparently provides an answer (8a13-b21). The chapter's structure is quite clear, yet each section contains a problem that seems to undermine its consistency. In this article the Author presents Aristotle's two definitions of relatives, focusing on the aporia that takes him from the first to the second. To what extent the second definition can be seen to solve the aporia is also examined
Alessandro di Afrodisia et il De interpretatione: il caso della proposizione
No full textAlexander of Aphrodisias and De Interpretatione: the Case of the Proposition. This article considers a passage in Alexander of Aphrodisias’ commentary on the Prior Analytics (in APr., 10, 13-28) concerning the definition of proposal (premiss or proposition). Its interest lies in the fact that Alexander establishes a very articulated relationship between the definition of proposal that we find in Aristotle’s Prior Analytics (24a16-17) and that of Apophantic reason (position) in De interpretatione (4, 17a2-3). Nonetheless, the author aims to demonstrate that this relationship is problematic and unnecessary because the definition of proposal in Prior Analytics is in fact independent from the definition of Apophantic reason. However, it is also the author’s intention to show why Alexander does this.
sj-docx-2-jicm-10.1177_08850666211066799 - Supplemental material for High- Versus Low-Dose Dexamethasone for the Treatment of COVID-19-Related Acute Respiratory Distress Syndrome: A Multicenter, Randomized Open-Label Clinical Trial
No full textSupplemental material, sj-docx-2-jicm-10.1177_08850666211066799 for High- Versus Low-Dose Dexamethasone for the Treatment of COVID-19-Related Acute Respiratory Distress Syndrome: A Multicenter, Randomized Open-Label Clinical Trial by Luis Patricio Maskin, Ignacio Bonelli, Gabriel Leonardo Olarte, Fernando Palizas, Agostina E Velo, María Fernanda Lurbet, Pablo Lovazzano, Sophia Kotsias, Shiry Attie, Ignacio Lopez Saubidet, Natalio D Baredes, Mariano Setten and Pablo Oscar Rodriguez in Journal of Intensive Care Medicine</p
sj-docx-1-jicm-10.1177_08850666211066799 - Supplemental material for High- Versus Low-Dose Dexamethasone for the Treatment of COVID-19-Related Acute Respiratory Distress Syndrome: A Multicenter, Randomized Open-Label Clinical Trial
No full textSupplemental material, sj-docx-1-jicm-10.1177_08850666211066799 for High- Versus Low-Dose Dexamethasone for the Treatment of COVID-19-Related Acute Respiratory Distress Syndrome: A Multicenter, Randomized Open-Label Clinical Trial by Luis Patricio Maskin, Ignacio Bonelli, Gabriel Leonardo Olarte, Fernando Palizas, Agostina E Velo, María Fernanda Lurbet, Pablo Lovazzano, Sophia Kotsias, Shiry Attie, Ignacio Lopez Saubidet, Natalio D Baredes, Mariano Setten and Pablo Oscar Rodriguez in Journal of Intensive Care Medicine</p
Efecto de la demineralización en la pirólisis de aserrín de una especie invasiva
No full textSe estudia comparativamente la cinética del proceso de pirólisis de aserrín de Cina-cina, prístina y sometida a un tratamiento de demineralización, mediante análisis termogravimétrico no isotérmico, con el fin de examinar el efecto de los minerales naturalmente presentes en este recurso biomásico. Asimismo, a partir de ensayos en un equipo escala banco, se analizan los rendimientos de los tres productos de pirólisis (gases, bio-char y bio-oil) a 500ºC, su composición y otras características físicoquímicas. La demineralización desplaza el inicio del proceso y la máxima velocidad de degradación hacia temperaturas mayores, y produce un aumento en la energía de activación. El bio-char proveniente del aserrín demineralizado presenta un mayor desarrollo poroso que el resultante del aserrín prístino. La remoción de minerales aumenta la producción de levoglucosano en los productos volátiles condensables, a expensas de una disminución en los furanos, e incrementa el poder calorífico superior de los gases generados.Fil: Gurevich Messina, Luciano Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Industrias; ArgentinaFil: Bonelli, Pablo Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Industrias; ArgentinaFil: Cukierman, Ana Lea. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Industrias; Argentin
In-situ catalytic pyrolysis of peanut shells using modified natural zeolite
No full textIn-situ catalytic pyrolysis of peanut (Arachis hypogaea) shells was investigated employing modified clinoptilolite. Likewise, conventional pyrolysis of the shells was explored to quantify the deoxygenation degree of bio-oil. Two solid catalysts obtained from natural clinoptilolite were used: one which retained most of the native cations and another one subjected to ion exchange treatment to develop Brønsted acid sites. These catalysts were characterized using different techniques, such as scanning electron microscopy with X-ray microanalysis, Fourier transform infrared spectroscopy by pyridine adsorption, and nitrogen sorptometry. Assays in a bench scale installation based on a fixed bed reactor were conducted at 500 °C and the yields of the three kinds of pyrolysis products (bio-oil, bio-char and gases) were determined. Likewise, the composition and other physical properties of the bio-oil and gases were investigated. Both catalysts led to reduce the oxygen content of the bio-oil, improving its high heating value. On the other hand, catalytic pyrolysis promoted a slight reduction in bio-oil production at expenses of an increase in gases generation. The catalyst subjected to ion exchange performed better than the native form as less water was generated in the catalytic cracking.Fil: Gurevich Messina, Luciano Ignacio. Universidad de Buenos Aires. Programa de Investigación y Desarrollo de Fuentes Alternativas de Materias Primas y Energía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Bonelli, Pablo Ricardo. Universidad de Buenos Aires. Programa de Investigación y Desarrollo de Fuentes Alternativas de Materias Primas y Energía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Cukierman, Ana Lea. Universidad de Buenos Aires. Programa de Investigación y Desarrollo de Fuentes Alternativas de Materias Primas y Energía; Argentina. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin
Tempo, ciclo e canção
No full textO presente projeto de graduação consiste na descrição do processo de produção e composição do projeto artístico Tempo, ciclo e canção do cantor e compositor Brunno Bonelli. A obra tem como maior referência sonora a música popular brasileira bem como reflete trajetórias e experiências vividas durante o curso de bacharelado em música popular da Universidade Federal do Rio Grande do Sul. O objetivo principal é apresentar cinco canções escolhidas abordando processo de composição, análise das letras e concepções que as permeiam. O processo descritivo aborda o EP de forma geral e mergulha em cada faixa de modo a desvelar a relação do autor com suas escolhas em todas as etapas que a canção passou até seu fechamento. Explicita, ainda, como cada canção e o projeto como um todo mostram-se influenciados pelos oito anos de curso.This graduation project is a description of the process of production and composing of the artistic project Tempo, ciclo e canção by singer-songwriter Brunno Bonelli. The work has Brazilian popular music as its main sound reference as well as it reflects the paths and experiences lived through during the Bachelor’s course in Popular Music at the Federal University of Rio Grande do Sul. The main goal is to present five selected songs approaching the composition process, analyzing the lyrics and the concepts within them. The descriptive process tackles the EP in general and dives into each track so as to unveil the relationship of the author with each choice throughout every step of making the song up to its closure. It also uncovers how each song and the project as a whole were influenced by the eight years of graduation
Effect of mineral matter removal on pyrolysis of wood sawdust from an invasive species
No full textKinetics of the pyrolysis of wood sawdust from the invasive species Parkinsonia aculeata, untreated and demineralized by a mild acid treatment, is comparatively investigated in order to examine the effect of the removal of minerals naturally present in the biomass. Non-isothermal thermogravimetric analysis from room temperature up to 500°C is applied for this purpose. Demineralization shifts the process onset and the maximum degradation rate to higher temperatures, and leads to enhance the activation energy from 56 to 60 kJ mol–1, pointing to a catalytic role of alkaline and alkaline earth metals in the biomass. Likewise, the three kinds of pyrolysis products (gas, bio-char, and bio-oil) are obtained from experiments performed in a bench-scale installation at 500°C. Yields and physicochemical characteristics of the pyrolysis products are determined. The pronounced reduction in the content of metals in the sawdust leads to increase bio-oil yield in around 10%, the specific surface area of the bio-char, from ≈ 2 to ≈ 74 m2 g–1, and the higher heating value of all the pyrolysis products.Fil: Gurevich Messina, Luciano Ignacio. Universidad de Buenos Aires. Programa de Investigación y Desarrollo de Fuentes Alternativas de Materias Primas y Energia. Departamento de Industrias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Bonelli, Pablo Ricardo. Universidad de Buenos Aires. Programa de Investigación y Desarrollo de Fuentes Alternativas de Materias Primas y Energia. Departamento de Industrias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Cukierman, Ana Lea. Universidad de Buenos Aires. Programa de Investigación y Desarrollo de Fuentes Alternativas de Materias Primas y Energia. Departamento de Industrias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin
Copyrolysis of peanut shells and cassava starch mixtures: Effect of the components proportion
No full textCopyrolysis of peanut (Arachis hypogaea) shells and cassava (Manihot esculenta) starch using mixtures of different proportions was examined to improve yield of the bio-oil and its quality. Pyrolysis of the individual components was also investigated in order to quantify the improvement of the measured properties. The kinetics of pyrolysis/copyrolysis was characterized by thermogravimetrical analysis and the application of two different models: one which takes into account the deactivation of the solid, and another one which assumes a normal distribution of the activation energy. Interactions between the starch and the shells were inferred since maximum reaction rates were, in all cases, lower than the weighed average values obtained for the pyrolysis of the individual components. Furthermore, both the bio-oil yield and the water content of the liquids showed synergistic effects. A mixture composed by 75 wt% of starch and 25 wt% of peanut shells led to maximize the yield of the bio-oil (58.2 wt%), while its water content was reduced in 3.4% in comparison with the value expected from the weighed average of the individual results. On the other hand, the addition of the starch to the peanut shells led to a bio-char with less ash content. It could be more suitable for further combustion in steam boilers.Fil: Gurevich Messina, Luciano Ignacio. Universidad de Buenos Aires. Programa de Investigación y Desarrollo de Fuentes Alternativas de Materias Primas y Energía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Bonelli, Pablo Ricardo. Universidad de Buenos Aires. Programa de Investigación y Desarrollo de Fuentes Alternativas de Materias Primas y Energía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Cukierman, Ana Lea. Universidad de Buenos Aires. Programa de Investigación y Desarrollo de Fuentes Alternativas de Materias Primas y Energía; Argentina. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Tecnología Farmacéutica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin
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