1,376 research outputs found

    Reform of economic system and the thesis of the three economies

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    La Tesis de las Tres Economías sustenta que para avanzar en la gradual resolución de los problemas de desempleo y pobreza, los países tendrán que consensuar nuevas ideas de políticas públicas para complementar los medulares aportes realizados, en sus respectivos tiempos históricos, por las escuelas de pensamiento surgidas en torno a las contrastantes ideas de Adam Smith, Carlos Marx, John M. Keynes y Raúl Prebisch. La Tesis propone, específicamente, institucionalizar reformas en el sistema económico para asegurar el buen funcionamiento simultáneo y convergente de un capitalismo competitivo de libre mercado, una eficaz economía pública con normas de seguridad jurídica y una nueva economía social-comunitaria que activando el funcionamiento de “mercados sociales de trabajo productivo” posibilite crear riquezas utilizando las energías de jóvenes y adultos desempleados.The thesis of the Three Economies supports that progress in the gradual resolution of the problems of unemployment and poverty, countries will have to agree on public policy ideas to complement the core contributions made in their respective historical times, schools of thought emerged around the contrasting ideas of Adam Smith, Karl Marx, John M. Keynes and Raul Prebisch. The thesis proposes specifically institutionalize reforms in the economic system to ensure good convergent and concurrent operation of a competitive free market capitalism, an effective public economy standards of legal certainty and a new social-communal economy turning operation "social productive labor markets "enables creating wealth using the energies of young people and unemployed adults

    Non-topological condensates for the self-dual Chern-Simons-Higgs model

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    For the abelian self-dual Chern-Simons-Higgs model we address existence issues of periodic vortex configurations -- the so-called condensates-- of non-topological type as k0k \to 0, where k>0k>0 is the Chern-Simons parameter. We provide a positive answer to the long-standing problem on the existence of non-topological condensates with magnetic field concentrated at some of the vortex points (as a sum of Dirac measures) as k0k \to 0, a question which is of definite physical interest.Comment: accepted on Comm. Pure Appl. Mat

    Spectral Fatigue Behavior of AZ31 Magnesium During Variable Loading

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    Situación del cáncer gástrico en el mundo y en Chile

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    ResumenEl cáncer gástrico es uno de los cánceres más frecuentes en el mundo. Recientes estudios han contribuido en la comprensión de esta enfermedad. El objetivo de este artículo es revisar de manera crítica y actualizada distintos aspectos del cáncer gástrico tanto a nivel mundial como a nivel chileno. Este artículo revisa algunos aspectos relacionados con el cáncer gástrico, tales como epidemiología, dieta, estudio histológico, búsqueda de lesiones precancerosas, prevención, Helicobacter pylori, estilos de vida, factores metabólicos y tratamiento.AbstractGastric cancer is one of the most common cancers in the world. Recent studies have contributed to the understanding of this disease. The aim of this article is to critically review various aspects of gastric cancer both globally and Chilean. This article reviews some aspects related to gastric cancer, such as epidemiology, diet, histology, screening of precancerous lesions, prevention, Helicobacter pylori, lifestyles, metabolic factors and treatment

    Spectral Fatigue Behavior of AZ31 Magnesium During Variable Loading

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    Undergraduate Applie

    Lesbian motherhood in a Chilean cultural context

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    An emerging body of research is paying a particular attention into the family life of lesbian mothers who live in Latino countries. These studies have revealed how the cultural understandings of gender, sexuality and homophobia and the political/legal context have constrained the family experiences of Latina lesbian mothers. Notwithstanding, these studies have failed to recognize possible linkages between religious discourses and family of origin influences on understandings of lesbian motherhood within a Latino context. Latino societies hold a strong Christian religious heritage, with the Catholic Church being historically influential on national legislation that privileges heteronormative assumptions of family formation. By exploring the case of Chile, this thesis aims to examine how understandings of lesbian motherhood are constructed within the context of a strongly Catholic, and to some extent Evangelical, Latino society. The thesis details findings from three empirical, qualitative studies, within a life course theory perspective. Data from 29 participants collected through individual semi-structured interviews and focus groups were analysed. The first study used individual interviews and Narrative Analysis to explore the stories of sexual identity and motherhood of eight lesbian mothers who conceived their children within the context of a previous heterosexual relationship. The study found that participants struggled to express their same-gender feelings because lesbian women were often seen as "sick" or "deviant" and inappropriate models of motherhood. The second study used focus groups and Interpretative Phenomenological Analysis to explore the expectations of motherhood of a younger cohort of six lesbian and bisexual prospective mothers. The study revealed that participants thought that it would be difficult to deal with Chilean society as mothers because the same-gender attraction was still seen as a perversion/abnormality by some people within their family of origin and their social contexts. The third study investigated contemporary Chilean attitudes towards lesbian and gay parenting using Thematic Analysis of focus group data from 15 heterosexual women who were first-year psychology students in an evening university program. The study revealed that a minority of participants had worries that having same-gender parents could disrupt children's gender and sexual orientation development. It is concluded that despite an increasing level of acceptance of “homosexuality” in Chile, lesbian mothers were still regarded as "immoral" models for children by some heterosexual people, particularly those who had a Christian religious background. These moral discourses had a strong impact on what lesbian and bisexual participants felt they could reasonably do or on what they expected to happen by living in Chilean society as a mother

    Multimodal, Multifunctional Polymer Coated Nanoparticles

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    Disclosed are nanoparticles having a metallic core consisting essentially of superparamagnetic iron oxide: a polymeric coat surrounding said core, the coat having a matrix of polyacrylic acid and forming an outer periphery of said nanoparticle; a pleurality of hydrophobic pockets formed by the polymeric coat; a plurality of carboxylic groups along an outer periphery of the polymeric coat and effective to conjugate with a predeterminded targeting ligand which functionalizes the nanoparticle; a lipophylic fluorescent dye encapsulated in the pleurality of hydrophobix pockets. Associated methods of making the nanoparticles and of treatments using the nanoparticles are also disclosed

    Aqueous Method for Making Magnetic Iron Oxide Nanoparticles CON

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    The invention discloses an aqueous method of making polymer coated superparamagnetic nanoparticles. The method comprises providing a mixture of iron salts in an aqueous solution of hydrochloric acid. A solution of ammonium hydroxide is added to the mixture and stirred. Stirring continues with an aqueous solution of one or more biocompatible polymers so as to promote formation of polymer coated iron nanoparticles in suspension, wherein optionally at least one of the polymers in the coating may be aminated. Centrifuging the suspension leaves a supernatant without large particles. Filtering the supernatant through an ultrafiltration membrane and collecting the filtrate recovers polymer coated nanoparticles. Crosslinking the polymer is effected by treatment with a solution of epichlorohydrin and sodium hydroxide while stirring vigorously for up to about eight hours. Optionally aminating the polymer may be accomplished by treatment with ammonia after crosslinking and then removing remaini

    Aqueous Method for Making Magnetic Iron Oxide Nanoparticles CON

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    The invention discloses an aqueous method of making polymer coated superparamagnetic nanoparticles. The method comprises providing a mixture of iron salts in an aqueous solution of hydrochloric acid. A solution of ammonium hydroxide is added to the mixture and stirred. Stirring continues with an aqueous solution of one or more biocompatible polymers so as to promote formation of polymer coated iron nanoparticles in suspension, wherein optionally at least one of the polymers in the coating may be aminated. Centrifuging the suspension leaves a supernatant without large particles. Filtering the supernatant through an ultrafiltration membrane and collecting the filtrate recovers polymer coated nanoparticles. Crosslinking the polymer is effected by treatment with a solution of epichlorohydrin and sodium hydroxide while stirring vigorously for up to about eight hours. Optionally aminating the polymer may be accomplished by treatment with ammonia after crosslinking and then removing remaini

    Synthesis of hyperbranched amphiphylic polyester and theranostic nanoparticles thereof

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    A method of making a hyperbranched amphiphillic polyester compound includes drying under vacuum a mixture of 2-(4-hydroxybutyl)-malonic acid and p-toulene sulphonic acid as a catalyst. The vacuum is then released with a dry inert gas after drying. The dried mixture is heated under the inert gas at a temperature sufficient for polymerization. The inert gas is evacuated while continuing to heat the mixture. The formed polymer is then dissolved in dimethylformamide and precipitated out by adding methanol. Modifications of the method yield nanoparticles of polyesters having properties suited for coencapsulating fluorescent dyes together with therapeutic drugs, resulting in theranostic nanoparticles, that is, nanoparticles useful in both therapeutic treatments and diagnostics methods
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