Experimentación formal y caída de los valores en Guía de Pecadores, de Eduardo Gudiño Kieffer

La hipótesis que funda el presente trabajo se centra en la correlación que se establece entre las transformaciones en el sistema literario, por un lado, y las modificaciones del contexto cultural y de las instituciones sociales, por otro. A partir de ella, se analiza la novela Guía de pecadores (1972), de Eduardo Gudiño Kieffer, como ejemplo paradigmático de la voluntad de innovación formal que se instala en las letras argentinas a partir de la década del 60. Se estudian en consecuencia una serie de procedimientos renovadores, tales como la incorporación por montaje de material extraliterario (textos periodísticos y publicitarios), el entramado de elementos icónicos de gran circulación social, la transferencia de textos fílmicos al código verbo-lingüístico, entre oíros. Se destaca la funcionalidad de esos procedimientos y luego de estudiar los distintos niveles del texto -superficie textual, diégesis, isotopías centrales- se establece la correlación entre las características de laformulación discursivay los fenómenos socio-culturales del contexto de emergencia.Fil: Tacconi de Gómez, María del Carmen. Universidad Nacional de Tucumá

Fiesta en Noviembre by Eduardo Mallea : formal experimentation in function of the semantic importance of ethical concerns

El análisis de la novela está precedido por una síntesis del pensamiento de Eduardo Mallea sobre la caída de los valores de la sociedad argentina. En esta introducción se incluye asimismo información que atañe al contexto referencial de la novela y que se vincula con las consecuencias de la crisis económica de 1929 en la Argentina. Una aproximación global al texto adelanta componentes referenciales de la diégesis que hacen presentes manejos económicos espurios, el brote de racismo antisemita que precedió a la Segunda Guerra Mundial y el asesinato de Federico García Lorca. La cuarta sección del estudio enfoca la superficie textual de la novela. Dos vertientes diegéticas dan lugar a segmentos que se alternan en la que fue, para su época, una innovadora estructuración textual. Las voces narradoras, los monólogos interiores, los procedimientos del lenguaje figurado, la relación adentro-afuera en el desarrollo de la acción completan el análisis. La quinta sección del trabajo aborda la diégesis y la estructura semántica profunda del texto.The analysis of the novel is preceded by a synthesis of Eduardo Mallea’s thinking of the decline of values in the Argentine society. In this introduction, information is also included concerning the referencial context of the novel which is related to the consequences of the 1929 economic crisis in Argentina. A global approach to the text advances referencial components of the diegesis that remind of the spurious economic management, the anti-Semitic racism outbreak that preceded II World War and Federico García Lorca’s assassination. The fourth section of the study focuses on the textual surface of the novel. Two diegetic sources give way to segments alternating in what was, for that time, an innovative textual structuring. The narrating voices, the inner monologues, the figurative language procedures, the inner-outer relationship in the action development complete the analysis. The fifth section of this work approaches the diegesis and the deep semantic structure of the text.Fil: Tacconi de Gómez, María del Carmen. Academia Argentina de Letra

A deep search for molecular gas in two massive Lyman break galaxies at z=3 and 4: vanishing CO-emission due to low metallicity

We present deep IRAM Plateau de Bure Interferometer (PdBI) observations, searching for CO-emission toward two massive, non-lensed Lyman break galaxies (LBGs) at z=3.216 and 4.058. With one low significance CO detection (3.5 sigma) and one sensitive upper limit, we find that the CO lines are >~ 3-4 times weaker than expected based on the relation between IR and CO luminosities followed by similarly, massive galaxies at z=0-2.5. This is consistent with a scenario in which these galaxies have low metallicity, causing an increased CO-to-H_2 conversion factor, i.e., weaker CO-emission for a given molecular (H_2) mass. The required metallicities at z>3 are lower than predicted by the fundamental metallicity relation (FMR) at these redshifts, consistent with independent evidence. Unless our galaxies are atypical in this respect, detecting molecular gas in normal galaxies at z>3 may thus remain challenging even with ALMA

A confiança interorganizacional nas compras

This research is part of the field of organizational studies, focusing on organizational purchase behavior and, specifically, trust interorganizational at the purchases. This topic is current and relevant by addressing the development of good relations between buyer-supplier that increases the exchange of information, increases the length of relationship, reduces the hierarchical controls and improves performance. Furthermore, although there is a vast literature on trust, the scientific work that deal specifically at the trust interorganizational still need further research to synthesize and validate the variables that generate this phenomenon. In this sense, this investigation is to explain the antecedents of trust interorganizational by the relationship between the variable operational performance, organizational characteristics, shared values and interpersonal relationships on purchases by manufacturing industries, in order to develop a robust literature, most consensual, that includes the current sociological and economic, considering the effect of interpersonal relationships in this phenomenon. This proposal is configured in a new vision of the antecedents of interorganizational trust, described as significant quantitative from models Morgan and Hunt (1994), Doney and Cannon (1997), Zhao and Cavusgil (2006) and Nyaga, Whipple, Lynch (2011), as well as qualitative analysis of Tacconi et al. (2011). With regard to methodological aspects, the study assumes the form of a descriptive, survey type, and causal trace theoretical and empirical. As for his nature, the investigation, explicative character, has developed a quantitative approach with the use of exploratory factor analysis and structural equation modeling SEM, with the use of IBM software SPSS Amos 18.0, using the method of maximum verisimilitude, and supported by technical bootstraping. The unit of analysis was the buyer-supplier relationship, in which the object under investigation was the supplier organization in view of the purchasing company. 237 valid questionnaires were collected among key informants, using a simple random sampling developed in manufacturing industries (SIC 10-33), located in the city of Natal and in the region of Natal. The first results of descriptive analysis demonstrate the phenomenon of interorganizational trust, in which purchasing firms believe, feel secure about the supplier. This demonstration showed high levels of intensity, predominantly among the vendors that supply the company with materials that are used directly in the production process. The exploratory and confirmatory factor analysis, performed on each variable alone, generated a set of observable and unobservable variables more consistent, giving rise to a model, that needed to be further specified. This again specify model consists of trajectories was positive, with a good fit, with a composite reliability and variance extracted satisfactory, and demonstrates convergent and discriminant validity, in which the factor loadings are significant and strong explanatory power. Given the findings that reinforce the model again specify data, suggesting a high probability that this model may be more suited for the study population, the results support the explanation that interorganizational trust depends on purchases directly from interpersonal relationships, sharing value and operating performance and indirectly of personal relationships, social networks, organizational characteristics, physical and relational aspect of performance. It is concluded that this trust can be explained by a set of interactions between these three determinants, where the focus is on interpersonal relationships, with the largest path coefficient for the factor under studyEsta pesquisa se insere no campo dos estudos organizacionais, focalizando o comportamento de compra organizacional e, de forma específica, a confiança interorganizacional nas compras. Esse tema é atual e relevante por abordar o desenvolvimento de boas relações entre comprador-fornecedor que amplia a troca de informações, aumenta o tempo de relacionamento, reduz os controles hierárquicos e melhora o desempenho. Além disso, embora exista uma vasta literatura sobre confiança, os trabalhos científicos que tratam especificamente da confiança interorganizacional ainda carecem de mais pesquisas que sintetizem e validem as variáveis geradoras desse fenômeno. Nesse sentido, essa investigação consiste em explicar os antecedentes da confiança interorganizacional pela relação entre as variáveis desempenho operacional, características organizacionais, compartilhamento de valores e relacionamento interpessoal nas compras realizadas pelas indústrias de transformação, a fim de desenvolver uma literatura robusta, mais consensual, que contemple as correntes sociológicas e econômicas, considerando o efeito das relações interpessoais nesse fenômeno. Essa proposta se configura em uma nova visão dos antecedentes da confiança interorganizacional, descritos como significativos com base nos modelos quantitativos de Morgan e Hunt (1994), Doney e Cannon (1997), Zhao e Cavusgil (2006) e Nyaga, Whipple, Lynch (2011), bem como da análise qualitativa de Tacconi et al. (2011). No que se refere aos aspectos metodológicos, o estudo assume a forma de uma pesquisa descritiva, do tipo survey, e causal de cunho teórico empírico. Quanto à sua natureza, a investigação, de caráter explicativo, se desenvolveu em uma abordagem quantitativa, com o uso da análise fatorial exploratória e da modelagem de equações estruturais SEM, com o recurso do software IBM SPSS Amos 18.0, utilizando o método da máxima verossimilhança e apoiada pela técnica de bootstraping. A unidade de análise foi a relação comprador-fornecedor, em que o objeto investigado era a organização fornecedora na visão da empresa compradora. Foram coletados 237 questionários válidos, entre os informantes-chaves, utilizando uma amostragem aleatória simples desenvolvida nas indústrias de transformação (CNAE 10 a 33), localizadas na cidade do Natal e na região da Grande Natal. Os primeiros resultados das análises descritivas demonstram o fenômeno da confiança interorganizacional na qual as empresas compradoras acreditam, se sentem seguras em relação à empresa fornecedora. Essa manifestação apresentou altos níveis de intensidade, com predominância entre os fornecedores que suprem a empresa com os materiais que são utilizados diretamente no processo produtivo. As análises fatoriais exploratórias e confirmatórias, realizadas em cada variável isoladamente, geraram um conjunto de variáveis observáveis e não observáveis mais consistentes, que juntas formaram um modelo que precisou de reespecificação. Esse modelo reespecificado foi constituído por trajetórias positivas, com bom ajustamento, com confiabilidade composta e variância extraída satisfatórias, assim como demonstra validade convergente e discriminante, nas quais as cargas fatoriais são significativas e com forte poder explicativo. Diante das constatações que reforçam o modelo reespecificado aos dados, sugerindo uma elevada probabilidade de que esse modelo seja o mais ajustado para a população em estudo, os resultados suportam a explicação de que a confiança interorganizacional nas compras depende diretamente do relacionamento interpessoal, do compartilhamento de valores e do desempenho operacional e indiretamente das relações pessoais, redes sociais, características organizacionais, aspecto físico e relacional do desempenho. Conclui-se que essa confiança pode ser explicada por um conjunto de interações entre esses três determinantes, nos quais o ponto central recai sobre o relacionamento interpessoal, que apresentou o maior coeficiente de trajetória para o fator em estud

Enhanced [CII] emission in a z=4.76 submillimetre galaxy

We present the detection of bright [CII] emission in the z=4.76 submillimetre galaxy LESS J033229.4-275619 using the Atacama Pathfinder EXperiment. This represents the highest redshift [CII] detection in a submm selected, star-formation dominated system. The AGN contributions to the [CII] and far-infrared (FIR) luminosities are small. We find an atomic mass derived from [CII] comparable to the molecular mass derived from CO. The ratio of the [CII], CO and FIR luminosities imply a radiation field strength G_0~10^3 and a density ~10^4 cm^-3 in a kpc-scale starburst, as seen in local and high redshift starbursts. The high L_[CII]/L_FIR=2.4x10^-3 and the very high L_[CII]/L_CO(1-0) ~ 10^4 are reminiscent of low metallicity dwarf galaxies, suggesting that the highest redshift star-forming galaxies may also be characterised by lower metallicities. We discuss the implications of a reduced metallicity on studies of the gas reservoirs, and conclude that especially at very high redshift, [CII] may be a more powerful and reliable tracer of the interstellar matter than CO.Comment: 5 pages, 2 figures; accepted for publication in Astronomy & Astrophysics Letter

Modulated reflectance spectroscopy and voltammetry of the sulphide/gold system

The electroadsorption of sulphide species on gold and the growth of sulphur multilayers have been investigated by optical and electrochemical techniques in sodium tetraborate buffer as the supporting electrolyte (pH 7.0 and 9.2) at 25°C. Differential reflectance spectra indicate that the adsorption of sulphide begins inside the hydrogen evolution reaction (HER) region. The HER is catalysed by the presence of sulphide species on the electrode. During the growth of sulphur multilayers, soluble polysulphide species can be optically detected either as intermediates under diffusion-controlled kinetics or as products of a chemical reaction between sulphide ions and the deposited sulphur layer. The steep fall in the integral reflectance at 0.4 V (vs. SHE) is interpreted through the incorporation of light-absorbing polysulphides into the structure of the deposited sulphur layer.Instituto de Investigaciones Fisicoquímicas Teóricas y AplicadasFacultad de Ciencias Exacta

Cytotoxic effects of copper overload on human-derived lung and liver cells in culture

Background: Copper (Cu) is an essential trace metal used as a catalytic cofactor for many enzymes. However, it can have nocive effects when it participates in the Fenton reaction, producing reactive oxygen species (ROS). Excess Cu is present in the plasma of patients with diseases in which cell survival is crucial. In order to investigate the effect of Cu overload on the induction of cellular damage we chose two human cell lines derived from liver (HepG2) and lung (A-549) as representative cells exposed to exogenous (polluted air) and/or endogenous (systemic) Cu overload. Methods: We studied ROS production using thiobarbituric acid reactive substances (TBARS) and fluorimetric measurements with dichlorofluorescein, cell viability by the trypan dye exclusion test, the methyltetrazolium (MTT) and lactate dehydrogenase leakage (LDH) assays, various cytotoxic indexes, and caspasa-3 and calpain-dependent activation as the main signals involved in the apoptosis pathway. Results: Cu overload induces cell death by a differential activation of calpains (m- and μ-) and caspase-3, and modifies various proliferative indexes in a cell-type and concentration-dependent manner. The involvement of these two protease systems and the response of the two main Cu homoestatic proteins ceruloplasmin and metallothioneins are specific to each cell type. We demonstrated that Cu can trigger cell death by activation of specific protease systems and modify various proliferative indexes in a cell-type and concentration-dependent manner. General significance: These findings contribute to understanding the diverse effects of Cu overload on the pathogenesis of human diseases like cancer, cirrhosis and degenerative disorders.Instituto de Investigaciones Bioquímicas de La Plat

The electrooxidation of chemisorbed co on polycrystalline platinum: A mechanistic interpretation of the anodic current peak multiplicity

The electrooxidation of CO on polycrystalline Pt in 1 M HClO4 at 23°C under potentiodynamic conditions exhibits a double current peak. Whether a single or a double current peak is formed depends to a great extent on the amount of CO surface coverage. The present report attempts to explain the behaviour of the electrochemical reaction in terms of a single model involving the participation of two CO adsorbed states on polycrystalline Pt.Instituto de Investigaciones Fisicoquímicas Teóricas y AplicadasFacultad de Ciencias Exacta

Potentiodynamic current/potential characteristics of theoretical mechanisms related to the electrochemical formation and electroreduction of monolayer films on inert electrodes

The current/potential curves of various mechanisms related to the electrochemical formation and electroreduction of monolayer films on inert electrodes, involving a single surface covering species and two surface covering species are presented. The potential perturbation functions consist both of single either linear or triangular potential sweeps and of triangular modulated linear potential sweeps. A comparison of the theoretical Eli displays obtained with the different potential perturbation techniques is given for the various reaction pathways presented.Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicada

The electrooxidation of chemisorbed co on polycrystalline platinum: A mechanistic interpretation of the anodic current peak multiplicity

The electrooxidation of CO on polycrystalline Pt in 1 M HClO4 at 23°C under potentiodynamic conditions exhibits a double current peak. Whether a single or a double current peak is formed depends to a great extent on the amount of CO surface coverage. The present report attempts to explain the behaviour of the electrochemical reaction in terms of a single model involving the participation of two CO adsorbed states on polycrystalline Pt.Instituto de Investigaciones Fisicoquímicas Teóricas y AplicadasFacultad de Ciencias Exacta