Ciencia y Tecnología

Los Museos De Montaña De Reinhold Messner Identidad, Turismo Y Sustentabilidad En Los Alpes De Sud Tirol

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Los Museos De Montaña De Reinhold Messner Identidad, Turismo Y Sustentabilidad En Los Alpes De Sud Tirol Ceruti, Maria Constanza El presente trabajo describe un conjunto de museos de montaña emplazados en los Alpes Orientales y las Dolomitas, analizando su vinculación con la educación para la sustentabilidad, la identidad, el patrimonio cultural y el turismo en Sud Tirol. Se aborda la inserción de los Museos de Montaña en el paisaje tirolés teniendo en cuenta su emplazamiento y su importancia en el desarrollo sustentable de las comunidades que los albergan. La museografía y las colecciones se analizan en función de su papel en la construcción de la identidad regional y en la educación para la valoración y preservación del patrimonio cultural y natural de la montaña, tanto a escala local como universal. Para la realización de esta investigación la autora recorrió seis establecimientos que forman la red de los Messner Mountain Museum (MMM) y mantuvo entrevistas con su director, el Sr. Reinhold Messner, considerado por muchos como el más destacado alpinista de la historia.; This paper describes a group of mountain museums set amidst the Eastern Alps and the Dolomites, considering their significance for the cultural identity, heritage education and sustainable tourism in South Tirol. The importance of the Mountain Museums is analyzed in connection to their setting and to the development of the communities in the area. The exhibits are analyzed considering their role in the construction of a regional identity and in the education towards the appreciation and preservation of the natural and cultural heritage of mountains, locally and worldwide. For the purpose of this research, the author visited the six buildings belonging to the net of the Messner Mountain Museum and she conversed with the director, Mr. Reinhold Messner, who is often credited as the most remarkable alpinist in history.

La marca Viva Jujuy! Construcción de la identidad gráfica de una provincia turística

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La marca Viva Jujuy! Construcción de la identidad gráfica de una provincia turística; Brand Viva Jujuy! Representations and graphic identity of a touristy province Bergesio, Liliana del Carmen; Scalone, Lucía Beatriz La marca Viva Jujuy! actualmente representa, en términos gráficos, a la provincia de Jujuy (noroeste de Argentina) y es utilizada por la Secretaría de Turismo y Cultura de la Provincia en todas sus apariciones en los medios de comunicación. Su surgimiento se remite a una convocatoria de un concurso impulsado por esta misma Secretaría como paso primordial para la instalación de sus destinos turísticos en el marco de la postulación de la región de la Quebrada de Humahuaca como Patrimonio de la Humanidad ante la Organización de las Naciones Unidas para la Educación, la Ciencia y la Cultura (UNESCO).En este trabajo se describirá el proceso por el cual se seleccionó este isologotipo para luego realizar un análisis técnico/formal que permita comprender a esta marca en su complejidad en tanto producto cultural. De manera complementaria se analizan las representaciones e imaginarios que distintos actores sociales construyen en torno a la identidad gráfica de la provincia. Para ello, se realizaron encuestas semiestructuradas a turistas y pobladores de Jujuy que procuran cubrir distintos grupos etarios, sexuales, de niveles de instrucción, lugares de residencia y relación vincular con la actividad turística, para así poder reconocer cuáles son los rasgos identificatorios que distintos sectores provinciales, nacionales e internacionales destacan para Jujuy.; The brand Viva Jujuy! currently represents graphically to the province of Jujuy (northwestern Argentina) and it is used by the Ministry of Tourism and Culture of the Province in all its appearances in the mass media. Its origin refers to a launching for a competition by the same Secretary as a fundamental step for the installation of its touristy destinations in the context of the application of the region of the Quebrada de Humahuaca as a World Heritage Site to the United Nations Educational, Scientific and Cultural Organization (UNESCO). This paper will describe the process by which this isologotype was selected to carry out a technical/formal analysis that allows the understanding of the brand in its complexity as a cultural product. Complementarily, we analyze representations and imaginary that different social actors build around the graphic identity of the province. To achieve this, semi-structured surveys were conducted among tourists and residents of Jujuy seeking to cover different ages, sex groups, levels of instruction, places of residence and relationship link with tourism, in order to recognize what the identifying the identifying features that different sectors provincial, national and international stand to Jujuy.

Primer reporte de Sweet potato leaf curl virus en las provincias de Córdoba y Santiago del Estero de Argentina

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Primer reporte de Sweet potato leaf curl virus en las provincias de Córdoba y Santiago del Estero de Argentina Martino, Julia Andrea; Di Feo, Liliana del Valle; Rodríguez-Pardina, Patricia Elsa La superficie con batata en Argentina experimentó notable reducción, causada por virosis que ocasionan daños en todas las regiones productoras, debido al intercambio indiscriminado de material de propagación y consiguiente ingreso de virus antes no citados, tales como los begomovirus de batata (sweepovirus), recientemente caracterizados en Bella Vista, Corrientes. En este trabajo, se analizaron secuencias parciales del genoma de dos aislamientos del Centro de Argentina, con las de uno previamente caracterizado en nuestro país (Bella Vista) y con las de otros begomovirus citados globalmente. Ambos aislamientos mostraron 97-99% de identidad de nucleótidos con Sweet potato leaf curl virus, de Bella Vista (JQ349087.1), por lo que según lo establecido por el International Committee on Virus Taxonomy (ICTV), ambos pertenecen a la misma raza. Sin embargo, es la primera vez que se caracteriza a este patogéno en la provincia de Córdoba y Santiago del Estero, Argentina; por lo que este trabajo es un aporte al esclarecimiento del complejo panorama de virosis en cultivo de batata en nuestro país.; The surface with sweet potato in Argentina experienced a significant reduction produced by an important loss of yield due to virus diseases. The introduction of virus, such as sweepoviruses (sweet potato begomoviruses), is generally caused by the indiscriminate exchange of propagation material between different regions. In this paper we analyzed partial sequences of the genome of two begomovirus isolates collected in the Central región of Argentina. These sequences were compared with those of one previously characterized in our country (Bella Vista) (JQ349087.1), and with other begomoviruses cited globally. Both isolates showed 97-99% homology with Sweet potato leaf curl virus, Bella Vista, so that according to what is established by the International Committee on Virus Taxonomy (ICTV), both isolates belong to the same strain. However, this is the first time that this pathogen is characterized in Cordoba and Santiago del Estero, Argentina; so this work is a contribution to the elucidation of the complex panorama of viruses in of sweet potatoes crops in our country.

Evolution of the electronic structure during the epitaxial growth of Au on Pt(100)

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Evolution of the electronic structure during the epitaxial growth of Au on Pt(100) Bengió, Silvina; Walczak, Łukasz; Vobornik, Ivana; Segovia, Pilar; Michel, Enrique G. We report an angle-resolved photoemission study of the electronic structure of Au layers grown epitaxially on Pt(100) in the coverage range 1-10 monolayers (ML). Our results include an analysis of the electronic band structure and the Fermi surface, combined with structural information from low-energy electron diffraction. The Au films grow epitaxially with a (1 × 1) pattern up to 4-5 ML. We monitor the electronic band structure near the surface X¯-point vs. Au coverage. In the 1-3 ML range we observe interface electronic states related to the formation of a Au-Pt alloy in this coverage range. Starting at 2-3 ML coverage, we identify quantum well states from the incipient Au sp band, which converge into a bulk like Au sp band near 6 ML. After 5-6 ML, a (1 × 7) pattern is observed, due to the formation of a surface reconstruction in the epitaxial Au film with a topmost hexagonal layer, as in the reconstruction of bulk Au(100). We identify specific electronic states of quasi-one-dimensional character coming from the corrugated hexagonal layer. We obtain a complete picture and understanding of the electronic structure of Au/Pt(100), including sp Au band formation, hybridization and electronic confinement, and with implications in the understanding of the distinct electronic behavior of Au layers and particles in the nm size range.

Algunas relaciones entre el holismo de la confirmación y el holismo semántico:Estudio de caso

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Algunas relaciones entre el holismo de la confirmación y el holismo semántico:Estudio de caso; Some Relations between the Confirmation Holism and Semantic Holism: A Case Study Ginnobili, Santiago La tesis del holismo de la confirmación aparece por primera vez presentada de manera explícita y extensa en los escritos de Duhem. Años después, es defendida por Quine, pero no en base a la discusión de teorías científicas particulares, sino en relación con su posición semántica. Desde entonces las relaciones entre el holismo semántico y el holismo de la contrastación han sido discutidas, aunque generalmente de un modo algo despegado del análisis de teorías específicas y sus relaciones. Pretendo mostrar a partir del análisis de un caso, el de las relaciones entre la genética de poblaciones y la teoría de la selección natural, un sentido en el que el holismo de la confirmación puede ser derivado del holismo semántico.; The thesis of the confirmation holism appears for the first time explicitly and extensively in the writings of Duhem. Years later, it is defended by Quine, but not based on the discussion of particular scientific theories, but in relation to its semantic position. Since then, the relations between semantic holism and confirmation holism have been discussed, although generally somewhat detached from the analysis of specific theories and their relations. I intend to show from the analysis of a case, that of the relations between population genetics and the theory of natural selection, a sense in which the holism of confirmation can be derived from semantic holism.

Ca(II) and Ce(III) homogeneous alginate hydrogels from parent alginic acid precursor: a structural study

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Ca(II) and Ce(III) homogeneous alginate hydrogels from parent alginic acid precursor: a structural study Sonego, Juan Manuel; Santagapita, Patricio Roman; Perullini, Ana Mercedes; Jobbágy, Matías Alginate hydrogels are suitable for the encapsulation of biomolecules and microorganisms for the building of bioactive materials. Several alternatives to the conventional alginate formulation are being studied for a broad range of biotechnological applications; among them the crosslinking of alginate by lanthanide cations, Ln(III), envisages expanded biomedical applications. The performance of these functional materials is highly related to the microstructure of the alginate matrix, which in turn is affected by the conditions of synthesis. In particular, when a diffusing gradient of the crosslinking cation is involved, microstructure inhomogeneities are expected at the macroscopic level. Here we discuss the subtle differences in the microstructure, as assessed by SAXS (Small Angle X-ray Scattering), established in the direction of the gradient of diffusion of Ca(II) or Ce(III).

Formation of volatile compounds, peptidolysis and carbohydrate fermentation by mesophilic lactobacilli and streptoccocci cultures in a cheese extract

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Formation of volatile compounds, peptidolysis and carbohydrate fermentation by mesophilic lactobacilli and streptoccocci cultures in a cheese extract Peralta, Guillermo Hugo; Wolf, Irma Veronica; Perotti, Maria Cristina; Bergamini, Carina Viviana; Hynes, Erica Rut Many studies about influence of Lactococcus lactis on cheese flavour have been reported, while the impact of mesophilic lactobacilli and Streptococcus thermophilus, either as single or mixed cultures, have been less studied. The ability of Lactobacillus paracasei 90, Lb. casei 72 (INLAIN collection) and Streptococcus thermophilus 2 (commercial strain) to produce flavour-related biochemical changes, as single or mixed (lactobacilli + streptococci) cultures, was assessed in a cheese model. These three strains, with different activities of glutamate dehydrogenase (GDH) and aminotransferases (AT), were incubated (14d/37 ºC) alone or in mixed cultures in a cheese model consisting of a sterile extract of a fresh cheese. Mesophilic lactobacilli showed fermentation of carbohydrates, an increase of peptidolysis and production of volatile compounds that were correlated with their AT activities. In addition, thesestrains also produced completely different profiles of the amino acceptor compounds: pyruvate and α-ketoglutarate. S. thermophilus 2 increased the level of α ketoglutarate due to its high GDH activity, but its ontribution to flavour compound production was negligible; Virtually no small additional hanges existed when S. thermophilus 2 was mixed with the lactobacilli. Biochemical changes leading to flavour formation were mainly due to the activity of lactobacilli. Our results suggest hat the AT profile and the peptidolytic activity of each strain influenced the volatilome of the extracts during incubation. So, both lactobacilli strains could be used as adjunct cultures in cheeses to increase/diversify the flavour, but more studies are needed to deepen the knowledge about the potential of S. thermophilus 2 for the production of flavour compounds.

A new algorithm for epilepsy seizure onset detection and spread estimation from EEG signals

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A new algorithm for epilepsy seizure onset detection and spread estimation from EEG signals Antonio Quintero, Rincón; Pereyra, Marcelo Fabián; D'Giano, Carlos; Batatia, Hadj; Risk, Marcelo Appropriate diagnosis and treatment of epilepsy is a main public health issue. Patients suffering from this disease often exhibit different physical characterizations, which result from the synchronous and excessive discharge of a group of neurons in the cerebral cortex. Extracting this information using EEG signals is an important problem in biomedical signal processing. In this work we propose a new algorithm for seizure onset detection and spread estimation in epilepsy patients. The algorithm is based on a multilevel 1-D wavelet decomposition that captures the physiological brain frequency signals coupled with a generalized gaussian model. Preliminary experiments with signals from 30 epilepsy crisis and 11 subjects, suggest that the proposed methodology is a powerful tool for detecting the onset of epilepsy seizures with his spread across the brain.

El Sudeste de Asia como emergente en el horizonte sudamericano

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El Sudeste de Asia como emergente en el horizonte sudamericano Rubiolo, María Florencia Los vínculos del Sudeste de Asía con América del Sur se dinamizaron a partir deprincipios de los noventa, de la mano del fin de la Guerra Fría, del boom delcrecimiento económico de las principales economías del Sudeste de Asia ?omilagros económicos, como fueron denominadas por el informe del Banco Mundialde 1993-, y de la aplicación en los países de América del Sur de medidaseconómicas de apertura y liberalización comercial que favoreció la búsqueda denuevos espacios de inserción para la exportación de materias primas y derivados.Fue entre la década de mediados de los ochenta a mediados de los noventa que seprodujo el mayor crecimiento económico de los países como Singapur, Tailandia yMalasia. Mientras el primerotuvo un crecimiento promedio de 8.5 entre 1986 y1997, en el mismo periodo el PBI de Tailandia creció 8.3% anual, y el de Malasia8.25% anual (World Bank,2010). Este ritmo de crecimiento despertó el interés deestadistasalrededor del globo, tanto como potenciales socios comerciales comomodelos de desarrollo económico a emular.

Un mundo rural en transición. Población, actividades y migraciones en la campaña de Buenos Aires según el Primer Censo Nacional de Población de la República Argentina (1869)

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Un mundo rural en transición. Población, actividades y migraciones en la campaña de Buenos Aires según el Primer Censo Nacional de Población de la República Argentina (1869); A Rural World in Transition. The Countryside of Buenos Aires according to the First National Population Census of the Argentinian Republic (1869) Conente, Claudia; Barcos, Maria Fernanda La campaña de Buenos Aires había recibido desde fines del siglo XVIII importantes corrientes migratorias interprovinciales que fueron progresivamente desplazadas por las provenientes de Europa. Si bien existen trabajos basados en los resultados generales, se ha abordado muy poco el estudio de la población a partir de las cédulas censales en sí mismas. Nos proponemos aquí observar la estructura de la población de la campaña bonaerense durante estos primeros tiempos de la inmigración masiva. Aplicando una perspectiva comparada entre tres pueblos (San Antonio de Areco en la zona norte, Mercedes en el centro y San Vicente en el sur) prestaremos particular atención a la composición de la población, su origen, las actividades productivas y el proceso de urbanización. Se analizan igualmente las pautas de destino y localización geográfica de los extranjeros en los pueblos rurales, las ocupaciones preferidas y la eventual diversificación de actividades en función de las nacionalidades.; Since the late 18th century, the countryside of Buenos Aires had received considerable waves of migrants from other provinces though they were progressively superseded by those that originated in Europe. Even if there exist studies based on the general results of the first national census, rarely have the handwritten records been used to examine a given population. We therefore propose to analyze in this article the population that inhabited the countryside of Buenos Aires during the first phase of massive immigration to the area. By making use of a perspective that compares three villages: San Antonio de Areco in the northern zone, Mercedes in the center, and San Vicente in the south. We will pay particular attention to the composition of the population, its origins, the productive activities that its inhabitants carried out and the process of urbanization. The geographical location of the foreigners in the rural villages will also be analyzed, as well as the occupations they preferred to do and how their professional activities were eventually diversified based on respective nationalities.

Os movimentos socioterritoriais: entre as classes e os movimentos populares

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Os movimentos socioterritoriais: entre as classes e os movimentos populares; The socioterritorial movements: between classes and popular movements; Los movimientos socioterritoriales: entre las clases y los movimientos populares Vasquez Cardona, David; Sobreiro Filho, José Realizamos uma reflexão sobre os movimentos socioterritoriais com a finalidade de resgatar e destacar a importância da leitura sobre as classes sociais, os movimentos populares e o território, tanto para compreendê-los com maior profundidade quanto para discutir e propor ações estratégicas emancipatórias na atualidade. Mediante a dinâmica de conflitos engendrados pelos imperativos da sociedade do capital, consideramos a leitura gramsciana sobre a categorização das classes subalternas um ponto de partida imprescindível para realizar a análise sobre os movimentos populares, em sua luta pela hegemonia do Estado na atualidade. Somada às concepções dos movimentos populares, apresentamos uma abordagem socioterritorial, a partir do conceito de território da geografia para enriquecer a leitura sobre o potencial das ações emancipatórias dos movimentos diante da voraz disputa territorial gerada pela lógica capitalista e potencializada pela globalização.; We conducted a reflection on the socio-territorial movements with the purpose of rescue and emphasize the importance of reading about the social classes, the popular movements and the territory, both in order to understand them in greater depth as to discuss and propose actions and strategies in the emancipatory struggles taking place currently. Through the dynamics of conflicts engendered by the imperatives of the society of capital, we believe the reading gramscian on categorization of the subaltern classes an indispensable starting point to perform the analysis on the popular movements, in their struggle for the hegemony of the State at the present time. In addition to notions of popular movements, we present an approach socioterritorial, based on the concept of territory of geography to enrich the reading on the potential of the emancipatory actions of the movements before the voracious territorial dispute generated by the capitalist logic and potentiated by globalization.; Realizamos una reflexión sobre los movimientos socioterritoriales con la finalidad de rescatar y destacar la importancia de la lectura sobre las clases sociales, los movimientos populares y el territorio, tanto para comprenderlos con mayor profundidad como para discutir y proponer acciones y estrategias emancipatorias en la actualidad. Mediante la dinámica de conflictos engendrados por los imperativos de la sociedad del capital, consideramos la lectura gramsciana sobre la categorización de las clases subalternas un punto de partida imprescindible para realizar el análisis sobre los movimientos populares, en su lucha por la hegemonía del Estado en la actualidad. Sumado a las concepciones de los movimientos populares, presentamos un abordaje socioterritorial, a partir del concepto de territorio de la geografía para enriquecer la lectura sobre el potencial de las acciones emancipatorias de los movimientos ante la voraz disputa territorial generada por la lógica capitalista y potencializada por la globalización.

Ordenanzas municipales, autoridad policial y trabajo femenino: la prostitución clandestina en Buenos Aires, 1870-1880

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Ordenanzas municipales, autoridad policial y trabajo femenino: la prostitución clandestina en Buenos Aires, 1870-1880; Municipal Ordinances, Police Authority, and Women’s Work: The Case of Clandestine Prostitution in Buenos Aires, 1870-1880; Ordonnances municipales, autorité policière et travail féminin: la prostitution clandestine à Buenos Aires, 1870-1880 Schettini Pereira, Cristiana Este artículo aborda los años posteriores a la aprobación de la ordenanza de 1875, que reglamentó las casas de prostitución, para examinar su impacto en los sentidos morales atribuidos a ciertos lugares de ocio y sociabilidad masculina que dependían del trabajo femenino. Se trata de un periodo marcado por la aprobación de inéditos reglamentos sobre viviendas y lugares de sociabilidad en el marco de la construcción del poder municipal. En especial, argumenta que la noción de ?prostitución clandestina? permite examinar la construcción cotidiana de la autoridad, los ámbitos municipales como escenarios de disputa entre derechos y los arreglos laborales entablados en estos lugares.; This article examines the years following the 1875 municipal ordinance that established regulations for houses of prostitution. It analyses the impact of this ordinance on the moral meanings of these establishments devoted to leisure and male sociability, which depended on women’s labour. This period of Buenos Aires’ history was shaped by the enactment of novel sanitary and municipal measures, in a context characterized by the construction of municipal authority. The article argues that the notion of “clandestine prostitution” can be used as a clue to examine the daily construction of local authority, the dispute of rights in the municipal setting, and labour relations in such establishments.; Cet article examine l’impact de l’ordonnance de 1875 sur la réglementation des maisons closes, durant les années qui suivent son approbation, sur les sens moraux attribués à certains lieux de plaisir et de sociabilité masculine qui dépendaient du travail féminin. Il s’agit d’une période marquée par l’approbation de règlements inédits en matière d’habitat et de lieux de sociabilité dans le cadre de la construction du pouvoir municipal. En particulier, l’article avance que la notion de “prostitution clandestine” permet d’examiner la construction quotidienne de l’autorité, les cadres municipaux comme lieux de disputes entre droits et les arrangements en matière de travail conclus dans ces lieux. Mots clé: Buenos Aires, 1870-1880, municipalité,

Layered vanadyl(IV) nitroprusside: Magnetic interaction through a network of hydrogen bonds

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Layered vanadyl(IV) nitroprusside: Magnetic interaction through a network of hydrogen bonds Gil, Diego Mauricio; Osiry, Hernádez; Pomirio, Fernando; Varetti, Eduardo Lelio; Carbonio, Raul Ernesto; Alejandro, R. R.; Ben Altabef, Aída; Reguera, Edilso The hydrogen bond and π-π stacking are two non-covalent interactions able to support cooperative magnetic ordering between paramagnetic centers. This contribution reports the crystal structure and related magnetic properties for VO[Fe(CN)5NO]·2H2O, which has a layered structure. This solid crystallizes with an orthorhombic unit cell, in the Pna21 space group, with cell parameters a=14.1804(2), b=10.4935(1), c=7.1722(8) Å and four molecules per unit cell (Z=4). Its crystal structure was solved and refined from powder X-ray diffraction data. Neighboring layers remain linked through a network of hydrogen bonds involving a water molecule coordinated to the axial position for the V atom and the unbridged axial NO and CN ligands. An uncoordinated water molecule is found forming a triple bridge between these last two ligands and the coordinated water molecule. The magnetic measurements, recorded down to 2 K, shows a ferromagnetic interaction between V atoms located at neighboring layers, with a Curie-Weiss constant of 3.14 K. Such ferromagnetic behavior was interpreted as resulting from a superexchange interaction through the network of strong OH····OH2O, OH····NCN, and OH····ONO hydrogen bonds that connects neighboring layers. The interaction within the layer must be of antiferromagnetic nature and it was detected close to 2 K.

Algunos problemas en torno a la noción de sánscrito clásico

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Algunos problemas en torno a la noción de sánscrito clásico Müller, Gabriela Fernanda; Orqueda, Verónica En este trabajo reflexionamos sobre algunos problemas en torno a la noción de sánscrito en general y de sánscrito clásico en particular. Partiendo de una serie de distinciones, discutimos cuatro caracterizaciones diferentes, pero relacionadas entre sí, del término “sánscrito”: (a) en cuanto lengua clásica; (b) en cuanto variedad lingüística natural; (c) en cuanto lengua en la que está compuesto el canon literario de la India antigua; y (d) en tanto lengua arti+cial. Estas caracterizaciones, junto con los problemas asociados a ellas, llevan directamente a considerar los desafíos que entraña la enseñanza de esta lengua, así como las posibles líneas de investigación que deben ser profundizadas.; This paper addresses some problems related to the question about what is Sanskrit in general, and what is Classical Sanskrit in particular. After o

A nonlinear aggregation type classifier

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A nonlinear aggregation type classifier Cholaquidis, Alejandro; Fraiman, Jacob Ricardo; Kalemkerian, Juan; Llop Orzan, Pamela Nerina We introduce a nonlinear aggregation type classifier for functional data defined on a separable and complete metric space. The new rule is built up from a collection of M arbitrary training classifiers. If the classifiers are consistent, then so is the aggregation rule. Moreover, asymptotically the aggregation rule behaves as well as the best of the M classifiers. The results of a small simulation are reported both, for high dimensional and functional data, and a real data example is analyzed.

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