6,799 research outputs found
Classification of agricultural systems based on pesticide use intensity and safety
Full text linkAn analysis of socio-economic driving forces in crop protection is proposed to improve the implementation of sustainable strategies. The analysis includes: (1) a classification of agricultural systems based on pesticide use intensity and safety, (2) an evaluation of the profitability of farming systems and identification of socio-economic factors that influence pesticide use and (3) formulation of policy recommendations. We find that for cereals and for fruit trees alike, crop yields are much higher for agricultural systems with high doses of pesticides. The safety of applied pesticides does not affect crop protection costs significantly. For cropping systems characterised by low-intensity in pesticide use, the application of safer products has a positive effect on reduction of crop protection costs.pesticide use, driving forces in crop protection, economic analysis of agricultural systems, Crop Production/Industries,
Figuraciones sesgadas: teatralidad, intermedialidad y yo autoral en Cristina Rivera Garza
Full text linkIn the work of Mexican writer Cristina Rivera Garza (Matamoros, 1964), strategies of autofiction in lyric and narrative are frequently used. Although author itself has scrutinized on the affordances and contradictions of writings of the self, especially in her essay The Restless Dead (2020), scholarship hasn’t work on it enough. In this article I study how self-representation are mediated through intermedial references in Rivera Garza’s books. In the first section, after discussing the relevance of self-representation as a problem in the lyric, I analyze its forms in both La más mía (1998) and La imaginación pública (2015) to locate a critical reflection on the self. In the second section, I consider the reference to author’s grandmother in Autobiografía del algodón (2020) as an oblique thinking on writing and its material conditions.A lo largo de la obra de la escritora mexicana Cristina Rivera Garza (Matamoros, 1964) con frecuencia aparecen estrategias de la autoficción narrativa y lírica. Aunque la propia autora ha reflexionado sobre las posibilidades y contradicciones de las escrituras del yo, especialmente en Los muertos indóciles (2013), la crítica se ha ocupado poco de este problema. En este artículo propongo mostrar que en la obra de Rivera Garza las figuraciones del yo aparecen mediadas por referencias intermediales. En el primer apartado, tras discutir la pertinencia de pensar la autoficción en la lírica, analizo su presencia en el libro La más mía (1998) y en La imaginación pública (2015) para identificar los reflejos críticos del yo. En el segundo, analizo la referencia a la fotografía de la abuela de la autora en Autobiografía del algodón (2020) como una reflexión oblicua sobre la escritura y sus condiciones materiales
Distorted Representations: Theatricality, Intermediality and Authorial Self in Cristina Rivera Garza
No full textA lo largo de la obra de la escritora mexicana Cristina Rivera Garza (Matamoros, 1964) con frecuencia aparecen estrategias de la autoficción narrativa y lírica. Aunque la propia autora ha reflexionado sobre las posibilidades y contradicciones de las escrituras del yo, especialmente en Los muertos indóciles (2013), la crítica se ha ocupado poco de este problema. En este artículo propongo mostrar que en la obra de Rivera Garza las figuraciones del yo aparecen mediadas por referencias intermediales. En el primer apartado, tras discutir la pertinencia de pensar la autoficción en la lírica, analizo su presencia en el libro La más mía (1998) y en La imaginación pública (2015) para identificar los reflejos críticos del yo. En el segundo, analizo la referencia a la fotografía de la abuela de la autora en Autobiografía del algodón (2020) como una reflexión oblicua sobre la escritura y sus condiciones materiales.In the work of Mexican writer Cristina Rivera Garza (Matamoros, 1964), strategies of autofiction in lyric and narrative are frequently used. Although author itself has scrutinized on the affordances and contradictions of writings of the self, especially in her essay The Restless Dead (2020), scholarship hasn’t work on it enough. In this article I study how self-representation are mediated through intermedial references in Rivera Garza’s books. In the first section, after discussing the relevance of self-representation as a problem in the lyric, I analyze its forms in both La más mía (1998) and La imaginación pública (2015) to locate a critical reflection on the self. In the second section, I consider the reference to author’s grandmother in Autobiografía del algodón (2020) as an oblique thinking on writing and its material conditions
Assessing Land Degradation (SDG 15.3) in Latin America: Western Coast of Mexico
No full textLatin American countries face extreme challenges in achieving the Sustainable Development Goals (SDGs) due to inequalities in access to information and economic resource allocation and a lack of effective political management. While Mexico is active in terms of the SDGs, the SDG related to land degradation has not been met. In 2015, Mexico ranked third in Latin America for the largest area of degraded land (47%), reducing the potential productivity of the soil, increasing arid lands, and compromising biological and/or economic productivity. This case study analyzes the Tomatlán Basin (257,915 ha) to evaluate the influence of agriculture on land degradation from 2000 to 2020 using the open-access tool Trends.Earth, which calculates trends in vegetation productivity and soil organic carbon changes using the global inputs MODIS and SoilGrids, respectively. Land cover transitions were calculated with regional inputs, and land cover maps were generated with Landsat imagery and the Dzetsaka classification tool in QGIS. The results show improvement in land conditions due to increased vegetation productivity related to ecological succession processes on 207,000 ha (80.6% of the territory), which is nine times larger than degraded territory (23,172 ha), indicating progress toward the 15.3 SDG target. The results were validated by using Google Earth Pro to identify degraded areas, achieving 92.5% accuracy. Trends.Earth is a useful tool for monitoring land degradation at different scales in countries with limited information and economic resources, allowing the identification of degraded areas so that appropriate practices and activities can be implemented.Fil: Sanchez Casanova, D.. Universidad de Guadalajara; MéxicoFil: Rivera García, J.. Universidad de Guadalajara; MéxicoFil: Cruz Romero, B.. Universidad de Guadalajara; MéxicoFil: Díaz Gómez, R.. Universidad Nacional de La Plata; ArgentinaFil: Rubio, María Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Investigaciones de las Zonas Áridas. Provincia de Mendoza. Instituto Argentino de Investigaciones de las Zonas Áridas. Universidad Nacional de Cuyo. Instituto Argentino de Investigaciones de las Zonas Áridas; Argentin
Retratos do exílio: experiências, solidariedade e militância política de esquerda na fronteira Livramento/Rivera (1964-1974)
Full text linkDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Filosofia e Ciências Humanas, Programa de Pós-Graduação em História, Florianópolis, 2008.Esta pesquisa aborda as experiências de militantes políticos, exilados na cidade de Rivera, e sua cidade gêmea, Santana do Livramento, na fronteira Brasil-Uruguai. Trata dos modos de sobrevivência e de solidariedade vivenciados por esse grupo, bem como as negociações com o poder ditatorial estabelecido a partir de 1964, e a militância política de resistência constituida a partir daquele território. Para tanto, utilizou-se da História Oral e de embasamentos da Micro-História na reconstituição do cotidiano daquela região em um período de 10 anos a partir de 1964. Por esta fronteira passaram militantes de expressão política naquele momento e que viriam a consolidar suas lideranças posteriormente, com a redemocratização do país. Ali se estabeleceu um território permeado pela solidariedade, onde ativistas e a população local trocaram experiências e partilharam momentos de tensão e esperança
Juan Rivera, un traduttore militante nella Spagna del Triennio Liberale
Full text linkThe aim of this paper is to investigate the figure of Juan Rivera, a Spanish translator working during the Liberal Triennium, through the analysis of prefaces he added to his three translations of important Enlightenment texts one of them being On Crimes and Punishments by Cesare Beccaria Bonesana. Since much of its fortune depended on the reception of its translations, first of all the French one by André Morellet, this paper analyses other translators’ prefaces, namely that of Morellet himself, the first anonymous English translation and the first Spanish one, in order to highlight correlations between the historical and political context and the translation method employed. Morellet, for instance, transformed the philosophical Italian essay into a legal treatise as he was guided by the idea of writing a useful tool for the French Nation and the whole of humanity, as he declared in his “Preface of the translator”. Juan Rivera, author of the second translation into Spanish of On Crimes and Punishments, seems to have followed his example: in his “Preface” he declared a manifest willingness to influence the political debate of his age (the Liberal Triennium, 1820-23) and, more precisely, to offer a useful instrument to legislators who were about to approve the first Spanish Criminal Code. He did the same with the two other translations he published in the same short liberal period, and with the same publisher (Imprenta de D. Fermín Villalpando), that is, the Spanish translations of Scienza della legislazione (The Science of Legislation) by Gaetano Filangieri and the Traité d’économie politique, by Jean-Baptiste Say, in this case, from French. Through the analysis of some passages from peritextual items, such as prefaces and open letters addressed to the Spanish National Congress, we attempt to draw the profile of this activist translator operating during an age full of optimistic expectations of the progress of society
Supplemental Material - Nutritional, biochemical, and clinical determinants of hyperuricemia in systemic lupus erythematosus patients: Relationship with clinical and renal disease activity
No full textSupplemental Material for Nutritional, biochemical, and clinical determinants of hyperuricemia in systemic lupus erythematosus patients: Relationship with clinical and renal disease activity by Bertha Campos-López, Mónica R Meza-Meza, Karen Pesqueda-Cendejas, Adolfo I Ruiz-Ballesteros, Melissa Rivera-Escoto, Juan M Vargas-Morales, Isela Parra-Rojas, Paulina E Mora-García, Barbara Vizmanos, Margarita Montoya-Buelna, Sergio Cerpa-Cruz and Ulises de la Cruz-Mosso in Lupus</p
L’humour dans folklore tachirense de Luis Felipe Ramón y Rivera
No full textLuis Felipe Ramón y Rivera is the author of the most important collection about traditional culture of Táchira (Venezuela). Using an advanced methodology by then, he tries to do several analyses and categorizations of the material collected. A constant element within the oral tradition collected in Folklore tachirense is the “humor” category. The author shows us a very particular way of humor that the inhabitants of Táchira have with some characteristics that make it really original.Luis Felipe Ramón y Rivera (1913 – 1993) es el autor de la recopilación más importante sobre la cultura popular tachirense. Utilizando una metodología de avanzada para entonces, intenta realizar diversos análisis y categorizaciones del material recopilado. Un elemento constante dentro de la tradición oral recogida en Folklore tachirense lo constituye la categoría “humor”. El autor nos muestra una forma muy particular de humor que tienen los tachirenses y que lo hacen realmente original. Recibido: 24-02-2018 Aceptado: 15-05-2018Luis Felipe Ramón y Rivera est l’auteur de la plus importante collection sur la culture populaire de Táchira (Venezuela). En utilisant une méthodologie déjà avancée sur son époque, il essaie d’effectuer diverses analyses et catégorisations du matériel collecté. Un élément constant de la tradition orale recueillie dans Folklore tachirense est la catégorie «humour». L’auteur nous montre une manière très particulière d’humour que les habitants de Táchira ont avec certaines caractéristiques qui le rendent vraiment origina
Creación y funcionamiento de una escuela-taller radiofónico en la Universidad Autónoma Metropolitana Xochimilco / A. Acosta Sotelo, R. Avila Alonso, E. Cruz Cruz, R. Domínguez Mora, J. Molina Rivera, J.E. Morales Ayala.
No full textReporte de Investigación para Lic. en Comunicación Social, Universidad Autónoma Metropolitana XochimilcoPropuesta de implementar en la Universidad Autónoma Metropolitana Xochimilco una estación de radio que sirva a la formación profesional de los estudiantes de comunicación principalmente con el objetivo de proporcionarles una visión del contexto social en el que se desenvuelven y que puedan proponer programas que requiere la problemática nacional
Structure of a bacterial type IV secretion core complex at subnanometre resolution
Full text linkType IV secretion (T4S) systems are able to transport DNAs and/or proteins through the membranes of bacteria. They form large multiprotein complexes consisting of 12 proteins termed VirB1-11 and VirD4. VirB7, 9 and 10 assemble into a 1.07 MegaDalton membrane-spanning core complex (CC), around which all other components assemble. This complex is made of two parts, the O-layer inserted in the outer membrane and the I-layer inserted in the inner membrane. While the structure of the O-layer has been solved by X-ray crystallography, there is no detailed structural information on the I-layer. Using high-resolution cryo-electron microscopy and molecular modelling combined with biochemical approaches, we determined the I-layer structure and located its various components in the electron density. Our results provide new structural insights on the CC, from which the essential features of T4S system mechanisms can be derived
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