La circulación del esoterismo en América Latina: El conde de Das y sus viajes por Argentina y Perú, 1892-1900; The circulation of esoterism in Latin America: The conde de Das and his travels through Argentina and Peru, 1892-1900; A circulação do esoterismo na América Latina: O conde de Das e seus viagens pela Argentina e Peru, 1892-1900 Vallejo, Mauro Sebastián; Palma Maturana, Patricia Este artículo examina la trayectoria profesional de Alberto Santini Sgaluppi, o conde de Das, un esoterista que se presentó en Buenos Aires y Lima a fines del siglo XIX, y el impacto de sus espectáculos entre diversos actores sociales en ambas capitales sudamericanas. Argumentamos que individuos como Sgaluppi jugaron un rol esencial en la difusión de conocimientos y fenómenos ligados con el esoterismo y la hipnosis, y que el estudio de sus emprendimientos puede iluminar el desarrollo de los discursos científicos y de los contornos de conocimientos definidos como “ciencia” en la esfera pública y más allá de círculos de expertos.; This paper examines the professional trajectory of Alberto Santini Sgaluppi (“conde de Das”), an esoterist who performed in Buenos Aires and Lima in the late nineteenth century and analyzes the impact of his spectacles on diverse social actors in the two South American capital cities. We argue that individuals like Sgaluppi played a pivotal role in the spread of knowledge about nascent phenomenons linked to esoterism and hypnotism; at the same time, a close examination of his performances throws light on the development of scientific discourses and on the contours of “science” in the public sphere, beyond the conventional circle of experts.; Este artigo examina a trajetória profissional de Alberto Santini Sgaluppi, ou conde de Das, esoterista que se apresentou em Buenos Aires e Lima no final do século XIX, e o impacto de seus espetáculos entre os diversos atores sociais de ambas as capitais sul-americanas. Argumentamos que indivíduos como Sgaluppi desempenharam um papel essencial na disseminação de conhecimento e fenômenos ligados ao esoterismo e à hipnose, e que o estudo de seus esforços pode iluminar o desenvolvimento de discursos científicos e os contornos de conhecimento definidos como “ciência” na esfera pública e para além dos círculos de especialistas.

Feeding strategies alter gene expression of the calpain system and meat quality in the longissimus muscle of Braford steers Coria, Maria Sumampa; Reineri, Pablo Sebastian; Pighín, Darío Gabriel; Barrionuevo, María Guadalupe del Valle; Carranza, Pedro Gabriel; Grigioni, Gabriela Maria; Palma, Gustavo Adolfo Objective: The aim of the present study was to determine the effect of supplementing pasture-finished steers with corn silage on the expression level of the calpain system proteins and beef tenderization. Methods: Thirty Braford steers grazing on summer pasture were used for the study. For 120 days fifteen animals were supplemented with corn silage at 1% of body weight per head per day (Suppl) whereas the remaining 15 steers only received pasture (Contr). Carcass and meat traits were evaluated and compared between groups. Gene expression and activities of proteases (calpain 1 and calpain 2) and inhibitor (calpastatin) were measured using real-time polymerase chain reaction and casein zymography. Results: Carcass and meat traits were significantly different between feeding systems. Supplemented steers showed higher hot carcass weight (p<0.01), fat content (p = 0.02), and Warner-Bratzler shear force (p = 0.03). Furthermore, the control group showed higher protease:inhibitor ratios, at mRNA (p = 0.01) and protein levels (p<0.10). Warner-Bratzler shear force and mRNA calpains:calpastatin ratio were associated in both feeding systems (p<0.01). Conclusion: Based on the results obtained in the study, beef tenderness differences among finishing strategies could be modulated through differential expression of the calpain system proteins.

Preservative effect of algae extracts on lipid composition and rancidity development in brine-canned Atlantic chub mackerel (Scomber colias) Barbosa, Roberta G.; Trigo, Marcos; Campos, Carmen Adriana; Aubourg, Santiago P. This research focuses on the lipid fraction and the rancidity stability of commercial canned Atlantic Chub mackerel (Scomber colias). For it, two different concentrations of aqueous extracts of two abundant algae (Fucus spiralis and Ulva lactuca) are included in the brine-packing (aq. 2% NaCl) medium during mackerel canning. Quality analyses are carried out after a 3-month canned storage (20 °C). Phospholipids, sterols, and α-tocopherol contents show a marked loss as a result of canning, this loss being mostly inhibited when considering the canned fish packed in the presence of the most concentrated algae extracts. Breakdown of free fatty acids and peroxides produced during the thermal treatment is inhibited by the presence of the algae extracts, a higher retention of such molecules being observed by increasing the algae extract concentration. Analysis of fluorescent compounds formation (tertiary lipid oxidation) shows a marked increase after canning, this increase being partly inhibited by the presence of antioxidant compounds present in the algae extracts; interestingly, oxidation inhibition is found more important in canned fish corresponding to F. spiralis batches than U. lactuca. A preservative effect on lipid constituents and rancidity development is concluded by the presence of algae extracts in the packing medium. Practical Applications: The extensive heat treatment involved during fish canning has been reported to produce breakdown of constituents, lipid damage (oxidation and hydrolysis) development showing a marked effect on nutritional and sensory properties; furthermore, this effect has shown to be greater when a brine medium is applied as packing system. Marine algae have been described as being a relevant source of chemical constituents including an antioxidant and antibacterial behavior. In the current work, employment of a commercial brine-packing including aqueous algae extracts shows a preservative effect on the lipid fraction (composition and rancidity stability) during the canning process of Atlantic Chub mackerel. The proposed strategy may open the way to the development of a natural biopreservation for commercial canned fish due to the simple methodology employed and the abundancy of the two algae chosen for the study. Further research should envisage optimization of the preservative compounds extraction by advanced technologies. Aqueous extracts of algae Fucus spiralis and Ulva lactuca are included in the packing medium during Atlantic Chub mackerel (Scomber colias) canning. As a result, an inhibitory effect on lipid composition changes and rancidity development is obtained. Better results are observed by employing alga F. spiralis.

Flour from fruits and vegetables waste with addition of a South-American pepper (Capsicum baccatum) proposed as food ingredient de Sá Mendes, Nathânia; Favre, Leonardo Cristian; Rolandelli, Guido; Dos Santos Ferreira, Cristina Isabel; de A.Gonçalves, Édira C. B.; Buera, Maria del Pilar The objective of this work was to evaluate the physicochemical properties of previously characterised flours obtained by milling the solid waste from the manufacture of an isotonic drink produced with various fruits and vegetables (FVR) to which powdered pepper fruits (PF) were added. Aqueous extracts were also prepared and encapsulated for protecting their functional compounds and improving their solubility. The encapsulation yields of the spray-drying processes were 90% and 64% for PF and FVR-PF, respectively. The addition of PF to FVR improved antioxidant capacity, stability and appearance, providing reddish colour. FT-IR spectra reflected the addition of PF by changes in the absorbances at wave numbers typical of carotenoids, acylglycerols, chlorophylls and those related to antioxidant capacity. The encapsulated extracts could be applied when solubility is needed in hydrophilic media. The obtained flours with PF addition are suitably cheap, stable functional food ingredients for industrial uses, such as breading or seasoning ingredients.

Functional and structural effects of hydrocolloids on Ca(II)-alginate beads containing bioactive compounds extracted from beetroot Aguirre Calvo, Tatiana Rocio; Santagapita, Patricio Roman; Perullini, Ana Mercedes In the present research, valuable bioactives such as betacyanin and polyphenols of beetroot leaf and stem (a food waste)were extracted and encapsulated in Ca(II)-alginate beads, using sucrose, arabic and guar gums, and low and high methoxyl pectins as excipients. A complete SAXS evaluation from the molecular to the supramolecular changes (1?100 nm)produced by excipients and extracts on the microstructure of the hydrogel network was performed. Thus, combining structural-functional information allows for the design of Ca(II)-alginate systems based not only on functional aspects. Here we demonstrate that the presence of hydrocolloids affected the alginate dimers size and density, the rods size and compactness as well as their interconnectivity. Nevertheless, these modifications can be overlied by the presence of an extract, which leads to alginate coordination prior to gelation, strongly affecting the resulting microstructure. Among the used hydrocolloids, only guar gum achieves the two proposed criteria: increasing functional properties and generating stable microstructural modulations.

El humor gráfico, un medio idóneo para promover el aprendizaje del dibujo, la escritura y su articulación. Creaciones de niños y adolescentes Pedrazzini, Ana Mercedes; Bugallo, Lucía; Zinkgraf, Constanza El humor gráfico puede ser entendido como un discurso multimodal en el que diversos signos -en su mayoría icónicos, plásticos y lingüísticos- interactúan para producir sentido y crear un efecto humorístico. La multimodalidad se manifiesta también por otras vías, compartidas con un tipo de discurso muy próximo, la historieta: la gestualidad es dibujada; los ruidos son escritos a través de onomatopeyas que se encuentran integradas visualmente en el relato; el movimiento es representado en la imagen fija a partir de líneas cinéticas; los diálogos entre los personajes -que remiten a la oralidad y son concebidos para ser escuchados más que para ser leídos- son escritos en globos cuya forma cambia según se trate de conversaciones, susurros o gritos.Diversos trabajos analizan la relación modal entre el dibujo y la escritura en el humor gráficoproducido por profesionales, siendo un terreno poco explorado el del humor gráfico de niños yadolescentes. En el presente trabajo buscamos aportar a la comprensión de las diversas formasen que niñas/os y adolescentes articulan los modos verbal y visual en la creación de humorgráfico. En particular, analizaremos: a) diversas estrategias implementadas en la articulaciónvisual-verbal, atendiendo a dificultades encontradas y sorteadas con éxito variable y b) el repertorio de recursos del género desplegados en las viñetas producidas. Basándonos enalgunos trabajos que advierten la dificultad de clasificar varios de los recursos como inequívocamente visuales o lingüísticos, proponemos entenderlos como parte de un continuumo entrecruzamiento modal. El corpus de análisis comprende 154 viñetas humorísticas producidas por niñas/os yadolescentes de 10 a 19 años durante nueve talleres de interpretación y producción de humorgráfico realizados en la ciudad de San Carlos de Bariloche y General Roca (2015-2018). Realizamos un análisis de la articulación verbal-visual a partir de la aplicación de categoríaselaboradas en trabajos previos (complementariedad, contradicción, predominio verbal/visualcon funciones específicas) e identificamos el tipo y cantidad de recursos del género. Cada autora codificó independientemente cada texto y luego se contrastaron las codificaciones. Las discrepancias fueron resueltas mediante discusión. En cuanto a la articulación modal, los resultados indican una primacía de la relación de complementariedad entre ambos modos, lo cual da cuenta del esfuerzo de los participantes por sacar provecho del potencial de cada modo semiótico. En menor medida los textos se articularon con un predominio visual, en los cuales lo verbal redundó parcialmente. Asimismo, identificamos la utilización de uno o dos recursos diferentes por texto, siendo los globos, las líneas cinéticas, las etiquetas y los carteles los más numerosos. Atendiendo a usos con mayor o menor grado de convencionalidad e innovación, describimos diversas estrategias llevadas acabo para producir viñetas inteligibles, por ejemplo la enumeración de globos y/o viñetas. Relevamos también algunas dificultades en la implementación de recursos, varias de las cuales remiten a los globos, tales como la confusión entre tipos de globos y la inadecuada ubicación de personajes y globos, entre otros.

La revista Riel y Fomento y su proyecto de modernidad americanista (1922-1928); A revista Riel y fomento e seu projeto de modernidade americanista (1922-1928); The magazine Riel y fomento and its project for an americanist modernity (1922-1928) Fasce, Pablo Javier El siguiente artículo se centra en Riel y fomento, revista argentina publicada por la Administración General de los Ferrocarriles del Estado entre 1922 y 1935. Con un enfoque explícitamente nacionalista, la publicación abordó asuntos de la actualidad ferroviaria argentina acompañados de artículos vinculados al fomento del turismo y la difusión de las artes y la arquitectura. La investigación estará centrada en el período 1922-1928 y profundizará en varios aspectos, como la participación de artistas e ilustradores, las contribuciones realizadas por gestores e intelectuales y el rol de las imágenes y artículos en la revista. Como hipótesis principal, sostengo que Riel y fomento articuló en sus páginas un proyecto de modernización social y cultural centrado en el poder ?civilizador? del ferrocarril, traducible en el crecimiento agrícola e industrial y en el desarrollo de una cultura auténtica de valores americanistas.; O seguinte artigo enfoca a Riel y fomento, uma revista argentina publicada pela Administração Geral das Ferrovias do Estado entre 1922 e 1935. Com uma abordagem explicitamente nacionalista, a publicação abordou questões de notícias ferrovias argentinas acompanhadas de artigos relacionados à promoção do turismo e a disseminação das artes e arquitetura. A pesquisa será focada no período 1922-1928 e será aprofundada em vários aspectos, como a participação de artistas e ilustradores, as contribuições de gestores e intelectuais e o papel das imagens e artigos na revista. Como hipótese principal, argumento que Riel y fomento articulou em suas páginas um projeto de modernização social e cultural focado no poder “civilizatório” da ferrovia, traduzível no crescimento agrícola e industrial e no desenvolvimento de uma autêntica cultura de valores americanistas.; The following paper focuses on Riel y fomento, an argentinian magazine published by the General Administration of the State Railways between 1922 and 1935. With an explicitly nationalist approach, the publication addressed railways issues accompanied by articles related to the promotion of tourism and the dissemination of arts and architecture. The research will be focused on the period 1922-1928 and will delve into several aspects, such as the participation of artists and illustrators, the contributions made by managers and intellectuals and the role of images and articles in the magazine. As a main hypothesis, I argue that Riel y fomento articulated in its pages a project of social and cultural modernization centered on the “civilizing” power of the railroad, translatable in agricultural and industrial growth and in the development of an authentic culture of Americanist values.

Assembly of spheroid-dominated galaxies in the EAGLE simulation Rosito, María Sol; Tissera, P. B.; Pedrosa, Susana Elizabeth; Rosas Guevara, Y. Context. Despite the insights gained in the last few years, our knowledge about the formation and evolution scenario for the spheroid-dominated galaxies is still incomplete. New and more powerful cosmological simulations have been developed that together withmore precise observations open the possibility of more detailed study of the formation of early-type galaxies (ETGs).Aims. The aim of this work is to analyse the assembly histories of ETGs in a Λ-CDM cosmology, focussing on the archeologicalapproach given by the mass-growth histories.Methods. We inspected a sample of dispersion-dominated galaxies selected from the largest volume simulation of the EAGLE project.This simulation includes a variety of physical processes such as radiative cooling, star formation (SF), metal enrichment, and stellarand active galactic nucleus (AGN) feedback. The selected sample comprised 508 spheroid-dominated galaxies classified according totheir dynamical properties. Their surface brightness profile, the fundamental relations, kinematic properties, and stellar-mass growthhistories are estimated and analysed. The findings are confronted with recent observations.Results. The simulated ETGs are found to globally reproduce the fundamental relations of ellipticals. All of them have an innerdisc component where residual younger stellar populations (SPs) are detected. A correlation between the inner-disc fraction and thebulge-to-total ratio is reported. We find a relation between kinematics and shape that implies that dispersion-dominated galaxies withlow V/σ L (where V is the average rotational velocity and σ L the one dimensional velocity dispersion) tend to have ellipticity smallerthan ∼ 0.5 and are dominated by old stars. On average, less massive galaxies host slightly younger stars. More massive spheroidsshow coeval SPs while for less massive galaxies (stellar masses lower than ∼ 10 10 M ), there is a clear trend to have rejuvenated innerregions, showing an age gap between the inner and the outer regions up to ∼ 2 Gyr, in apparent contradiction with observationalfindings. We find evidences suggesting that both the existence of the disc components with SF activity in the inner region and theaccretion of satellite galaxies in outer regions could contribute to the outside-in formation history in galaxies with low stellar mass.On the other hand, there are non-negligible uncertainties in the determination of the ages of old stars in observed galaxies. Strongersupernova (SN) feedback and/or the action of AGN feedback for galaxies with stellar masses lower than 10 10 M could contribute toprevent the SF in the inner regions.

Under the Empire of Spontaneous Solidarity: State and Political Action in the Theoretical Durkheimian Project (1892-1893) Inda, Graciela This paper aims at identifying and examining all the principles arisen from the issues of the state and politics in Durkheim’s production during the period 1892-1893, signaled by the publication of his famous thesis on the cohesive role of the division of social labor. According to the in-depth analysis carried out in this article, the most important points of Durheim’s politics are four. Firstly, the conception of the state as an organ that translates an automatic social solidarity because it is an entire entity preexisting any political relationships. Secondly, the distinction of despotism as a regime that implies the complete absorption of individuals by the political apparatus. Thirdly, the problem of the growing enlargement of the state interventions in the individuals’ private life sphere. Finally, the incapacity of any political action to transform the society’s morphology.

CRISPR-CAS9 en medicina, la saga continúa Becu, Damasia Hace solo dos años fuimos testigos de la impactante noticia que anunciaba la corrección del gen anómalo de la enfermedad hereditaria miocardiopatía hipertrófica en embriones humanos por medio de la técnica CRISPR/CAS9 1, 2. Esta noticia movilizó la opinión científica y pública porque era el comienzo de la edición de embriones humanos. En ese momento se plantearon dudas éticas y de validación científica.

Characterization of diatomaceous earth modified by organic ligands for enhanced zinc adsorption Sosa, Griselda Leonor; Fernández Morantes, César; Flores, Federico Manuel; Torres Sanchez, Rosa Maria; Zalts, Anita; Ramírez, Silvana Andrea María In order to enhance zinc adsorption, natural diatomaceous earth was modified by a simple batch procedure incorporating ligands with carboxylic and amine functional groups: ethylenediaminetetraacetic acid and 2-N(hydroxyethyl) iminodiacetic acid were used. The supernatants were analysed by square wave anodic stripping voltammetry monitored titrations to quantify ligand incorporation to the diatomaceous earth. The solids were characterized by energy-dispersive X-ray spectroscopy, scanning electron microscopy, X-ray diffraction, electrophoretic mobility, Fourier transform infrared spectroscopy and thermogravimetric analyses. Ligands modified the surface of the natural solid and were unable to enter the interlayer space of the smectite, main component of diatomaceous earth. Langmuir model was the most suitable to describe Zn(II) adsorption on diatomaceous earth whereas Freundlich showed better fit to data of the modified solids. The incorporation of organic ligands increased zinc retention by ca. 50%.

Efecto del tratamiento con florfenicol en el control de la enfermedad respiratoria bovina en engorde a corral; Effects of treatment with florfenicol in the control of bovine respiratory disease in feed-lots Galvan, Walter Ruben; Arriaga, Guido José; Streitenberger, Nicolás; Landoni, Maria Fabiana; Fazzio, Luis Emilio El objetivo del presente ensayo fue evaluar la eficacia deltratamiento metafiláctico con dosis únicas de florfenicol (20 y40 mg/kg vía subcutánea) frente a la enfermedad respiratoriaen terneros en engorde a corral. Se incluyeron 1.297 terneros,machos y hembras, con peso promedio de 110 kg, divididosen 5 corrales. Los animales fueron asignados, al azar, en tresgrupos; florfenicol 20 mg/kg (FLO20), florfenicol 40 mg/kg (FLO40)mientras que el tercer grupo, control, no recibió tratamiento(CTL). Se registró el peso individual de cada uno de los gruposen estudio (n=30 por grupo) los días 0, 21 y 50 del ensayo.El diseño fue en bloque (corral) y el animal fue consideradola unidad experimental. El porcentaje de animales enfermosfue de 10,83; 3,48 y 2,31 para los grupos CTL, FLO20 y FLO40,respectivamente. Además, se observó en los primeros 21 díasdel ensayo, una mayor ganancia diaria de peso (p<0,001) enlos grupos FLO20 y FLO40. El tratamiento metafiláctico con FLOdisminuyó la morbilidad por enfermedad respiratoria y mejoróla ganancia diaria de peso. No se encontraron diferenciasestadísticamente significativas entre los grupos FLO20 y FLO40en la ganancia diaria, incidencia de enfermedad respiratoria,porcentaje de retratamientos, ni mortalidad; The aim of this study was to evaluate the efficacy of metaphylactic treatment with single doses of florfenicol (20 and 40 mg/kg subcutaneously), against respiratory disease in feedlot calves. A total of 1297 male and female calves with an average weight of 110 kg were placed in five pens. They were randomly assigned to three groups: one group treated with florfenicol SC 20mg/kg (FLO20), a group treated with florfenicol SC 40 mg/kg (FLO40) and the control group (CTL) received no treatment. Individual weight was obtained in each group (n=30) on days 0, 21 and 50 of the trial. A complete randomize block (pen) design was used and the animal was considered the experimental unit. The percentage of ill animals was 10.83, 3.48 and 2.33 for the CTL, FLO20 and FLO40 groups, respectively. Moreover, a higher daily weight gain was observed in the FLO20 and FLO40 groups within the first 21 days of the trial (p<0,001). Metaphylactic treatment with FLO reduced morbidity due to respiratory disease and improved daily weight gain. No statistically significant differences were found between FLO20 and FLO40 groups regarding daily weight gain, respiratory bovine disease incidence, retreatment or mortality.

Most of anti-glycolipid IgG-antibodies associated to neurological disorders occur without their IgM counterpart Lardone, Ricardo Dante; Irazoqui, Fernando Jose; Nores, Gustavo Alejandro Different neurological disorders frequently display antibodies against several self-glycans. Increasing evidence supports their pathogenic role; however, far less is known about their origin. Meanwhile, antibodies recognizing non-self glycans appear in normal human serum during immune response to bacteria.

Molecular clumps towards compact H II regions Saldaño, Hugo Pablo; Rubio, Mónica; Cappa, Cristina Elisabeth; Gomez, Mercedes Nieves To better understand how the H II regions can affect their surrounding molecular clouds we have studied the molecular distribution towards three compact H II regions associated with IRAS sources (08140-3559, 09014-4736, and 09026-4842) by means of the observations of 12CO, 13CO, and C18O molecules in the J = 3-2 transition with the APEX telescope. In two cases, we show evidence of possible disruption of the molecular clouds and increasing turbulence towards the diffuse H α emissions, which could be due to the ionizing front. We find 11 clumps towards the IRAS sources either nearby or surrounding the H II regions. Their parameters, such as the optical depths, column densities, masses, and [13CO/C18O] abundances, were calculated assuming LTE conditions. We discuss the behaviour of such parameters and we have found that the [13CO/C18O] abundances in the IRAS sources associated with a diffuse H α emission are higher than the abundances in regions where no H α emission is detected, indicating that such a parameter could be affected by the UV field coming from H II region. We also discuss the rise of the average [H2/13CO] and [H2/C18O] abundances in the IRAS sources which show evidence of disruption of molecular clouds by the expansion of the H II regions. With these average abundances, we estimate the LTE total mass of each clump and compare them with the virial mass to discuss whether our clumps are gravitationally stable.

Prelinear Hilbert algebras Castiglioni, José Luis; Celani, Sergio Arturo; San Martín, Hernán Javier In this paper we give an explicit description of the left adjoint of the forgetful functor from the algebraic category of Gödel algebras (i.e., prelinear Heyting algebras) to the algebraic category of bounded prelinear Hilbert algebras. We apply this result in order to study possible descriptions of the coproduct of two finite algebras in the algebraic category of prelinear Hilbert algebras.

Adsorption of bentazone and imazapyc from water by using functionalized silica: Experimental and computational analysis Spaltro, Agustín; Simonetti, Sandra Isabel; Laurella, Sergio Luis; Ruiz, Danila Luján; Díaz Compañy, Andres Carlos Daniel; Juan, Alfredo; Allegretti, Patricia In this study, silica and functionalized silica materials (3-aminopropyl and 3-mercapto derivatives) were successfully used for the removal of the pesticides bentazone and imazapyc from aqueous solutions. Adsorbent materials were characterized by BET isotherms and FT-IR spectroscopy (confirming the functionalization), and their equilibrium adsorption capacity was evaluated at different ionic strengths. It is observed that the maximum adsorption capacities decrease in the order 3-aminopropyl-derivative > silica >3-mercaptopropyl derivative. An increase in ionic strength produces an enhancement in the removal of pesticides. All isotherms are Ib-type and follow the Langmuir model, suggesting a monolayer physical adsorption process.

Tareas intelectuales en la encrucijada latinoamericana Tatián, Diego En el presente texto se indaga acerca del lugar que adoptan las intervenciones intelectuales en el actual proceso político latinoamericano. Las tareas aquí propuestas y relevadas conciernen al estatuto de la lengua, a la condición de la memoria y la referencia a los derechos humanos que vertebraron parte del discurso público en la historia reciente, así como a la "cuestión democrática". Estas diferentes dimensiones de la tarea intelectual no son autónomas sino superpuestas. Finalmente, se establece una referencia a la Universidad en tanto laboratorio de ideas frente a los procesos mencionados.; This paper approachs the place of the intellectual interventions in the actual political processes in Latin America, in relation with the condition of the language, the culture of memory, the Human Rights and the democracy. These different dimensions of the intellectual work are not independent but overlapped. Finally, the text refers about the University as an ideas? lab, in relation to the described processes.

La alpargata contra la corbata. La representación del adversario político en la campaña electoral para la gobernación de Mendoza (1917-1918); La alpargata contra la corbata. The representantion the political adversary in the electoral campaing for the goverment of Mendoza (1917- 1918) Abraham, Raúl Andrés El 20 de enero de 1918 se realizaron elecciones para gobernador en la Provincia de Mendoza, en las que se enfrentaron conservadores y radicales. La campaña electoral tuvo lugar desde fines de noviembre de 1917, en un marco de polarización política agravado por la intervención federal enviada por el gobierno de Hipólito Yrigoyen. El artículo se propone abordar la caracterización del adversario que hicieron los dos partidos competidores a través de dos órganos de prensa locales (La Palabra y La Tarde), y la relación de estas representaciones y del universo simbólico gestado en torno a los comicios con el nuevo marco electoral, dado por la Ley Sáenz Peña a nivel nacional y por la legislación electoral local promovida por los gobiernos reformistas a nivel provincial.; On January 20, 1918 there were elections for governor in the Province of Mendoza, in which conservadores and radicales clashed. The electoral campaign took place from the end of November of 1917, in a frame of political polarization aggravated by the federal intervention sent by the government of Hipólito Yrigoyen. The article analyzes the characterization of the adversary made through two local newspapers (“La Palabra” and “La Tarde”) by the two competitors and the relationship of these representations and the political symbols used around the elections with the new electoral framework given by the Sáenz Peña Law at national level, and the new electoral laws promoted by the reformist governments at the local level.

Lumen-intima and media-adventitia segmentation in IVUS images using supervised classifications of arterial layers and morphological structures Lo Vercio, Lucas; del Fresno, Mirta Mariana; Larrabide, Ignacio Background: Intravascular ultrasound (IVUS) provides axial grey-scale images of blood vessels. The large number of images require automatic analysis, specifically to identify the lumen and outer vessel wall. However, the high amount of noise, the presence of artifacts and anatomical structures, such as bifurcations, calcifications and fibrotic plaques, usually hinder the proper automatic segmentation of the vessel wall. Methods: Lumen, media, adventitia and surrounding tissues are automatically detected using Support Vector Machines (SVMs). The classification performance of the SVMs vary according to the kind of structure present within each region of the image. Random Forest (RF) is used to detect different morphological structures and to modify the initial layer classification depending on the detected structure. The resulting classification maps are fed into a segmentation method based on deformable contours to detect lumen-intima (LI) and media-adventitia (MA) interfaces. Results: The modifications in the layer classifications according to the presence of structures proved to be effective improving LI and MA segmentations. The proposed method reaches a Jaccard Measure (JM) of 0.88 ± 0.08 for LI segmentation, compared with 0.88 ± 0.05 of a semiautomatic method. When looking at MA, our method reaches a JM of 0.84 ± 0.09, and outperforms previous automatic methods in terms of HD, with 0.51mm ± 0.30. Conclusions: A simple modification to the arterial layer classification produces results that match and improve state-of-the-art fully-automatic segmentation methods for LI and MA in 20MHz IVUS images. For LI segmentation, the proposed automatic method performs accurately as semi-automatic methods. For MA segmentation, our method matched the quality of state-of-the-art automatic methods described in the literature. Furthermore, our implementation is modular and open-source, allowing for future extensions and improvements.

Particulate matter combustion. Cordierite-supported potassium nitrate catalysts modified with transition metal oxides Leguizamón Aparicio, María Silvia del Valle; Montaña, Maia; Ruiz, Maria Lucia; Mosconi, Sandra Mariela; Musci, Juan José; Ocsachoque, Marco Antonio; Casella, Mónica Laura; Lick, Ileana Daniela In this work, cordierite-supported potassium nitrate catalysts modified with transition metal oxides are studied as catalysts for the particulate matter combustion from diesel engine emissions. The catalysts were prepared by nitrate solutions. The catalysts were characterized by XRD, differential scanning calorimetry (DSC), thermal programmed reduction (TPR), vibrational spectroscopy (FTIR) and Scanning microscopy provided with EDS analyzer.
KNO3 containing catalysts present high activity in the presence of O2/NO. The Tmax obtained with these catalysts decreases more than 200ºC with respect to the temperature of the non-catalyzed process. The activity is associated with the presence of KNO3 and the role of this salt can be attributed to the NO3-/ NO2- redox cycle contribution and to the surface wetting effect.