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showing 10 items of 580 documents
A method for soil moisture probes calibration and validation of satellite estimates
2017
Graphical abstract
Designing biochar properties through the blending of biomass feedstock with metals: Impact on oxyanions adsorption behavior
2018
Metal-blending of biomass prior to pyrolysis is investigated in this work as a tool to modify biochar physico-chemical properties and its behavior as adsorbent. Six different compounds were used for metal-blending: AlCl3, Cu(OH)2, FeSO4, KCl, MgCl2 and Mg(OH)2. Pyrolysis experiments were performed at 400 and 700 °C and the characterization of biochar properties included: elemental composition, thermal stability, surface area and pore size distribution, Zeta potential, redox potential, chemical structure (with nuclear magnetic resonance) and adsorption behavior of arsenate, phosphate and nitrate. Metalblending strongly affected biochars' surface charge and redox potential. Moreover, it incre…
Socio-Demographic Variables, Fear of COVID-19, Anxiety, and Depression: Prevalence, Relationships and Explanatory Model in the General Population of …
2021
The COVID-19 pandemic has gravely impacted Latin America. A model was tested that evaluated the contribution of socio-demographic factors and fear of COVID-19 on anxiety and depression in samples of residents in seven Latin American countries (Argentina, Ecuador, Mexico, Paraguay, Uruguay, Colombia, and El Salvador). A total of 4,881 individuals, selected by convenience sampling, participated in the study. Moderate and severe levels of depressive symptoms and anxiety were identified, as well as a moderate average level of fear of COVID-19. In addition, it was observed that about a quarter of the participants presented symptoms of generalized anxiety disorder and a major depressive episode. …
Mast cells partly contribute to allergic enteritis development: Findings in two different mast cell-deficient mice
2021
Allergic enteritis (AE) is a gastrointestinal form of food allergy. The presence of mast cells and granulocytes has been detected in the inflamed tissues in AE. In this study, we aimed to elucidate the role of mast cells in AE development using two mast cell-deficient mouse strains: KIT(W-sh/W-sh) bearing the W-sash (W(sh)) inversion mutation and Cpa3Cre/+, which lack mast cells due to Cre-mediated mast cell eradication, were used in an AE experimental model. The development of clinical symptoms (e.g. drop in body temperature and weight loss) were abolished in both strains, whereas inflammatory levels of AE (e.g. villous atrophy, edema, and granulocyte accumulation) were reduced mainly in K…
Heterophyid trematodes (Digenea) from penguins: A new species of Ascocotyle Looss, 1899, first description of metacercaria of Ascocotyle (A.) patagon…
2019
Two species of heterophyid trematodes were found in the Magellanic penguin, Spheniscus magellanicus (Forster), from Patagonia, Argentina. Ascocotyle (Ascocotyle) patagoniensis Hernández-Orts et al. (2012) is re-described based on new, properly fixed specimens (original material from South American sea lion, Otaria flavescens Shaw, was from frozen hosts). Metacercariae of this species are reported and described for the first time from the heart of the silversides, Odontesthes argentinensis (Valenciennes) and O. smitti (Lahille), from Patagonia. Ascocotyle (Phagicola) cameliae n. sp. is described from the intestine of S. magellanicus. The new species is placed into the subgenus Phagicola Faus…
Strategic use of pictorial representations in a science text with a biographical seductive detail in low prior knowledge readers
2015
La Teoría Cognitiva de Aprendizaje Multimedia (Mayer, 2001, 2005) sostiene que el procesamiento conjunto de información lingüística y pictórica resulta en una representación mental integrada del mensaje, y que la adición de representaciones pictóricas puede tanto beneficiar como perjudicar el desempeño asociado a la lectura, dependiendo de la función que cumplan dichos agregados. Este estudio examinó experimentalmente el efecto de asociar representaciones pictóricas con un texto expositivo en castellano (una población sub-representada) que incluyó un dato biográfico tangencial pero interesante (detalle seductor). Ciento cuarenta y siete participantes con bajo conocimiento previo leyeron el …
Del excentrismo formalista al principio del montaje
2022
J.Mª Pozuelo sostenía que la contribución fundamental de la OPOIAZ consistió en la rentabilidad del término teórico desautomatización oponiéndolo al de mero desvío. Esta consideración de conjunto puede ponerse en relación con el fenómeno que se ha dado en llamar 'crisis de la literariedad'. Con esta expresión se levanta acta de la decadencia producida desde finales de los años sesenta del paradigma formalista de cuño inmanentista en beneficio de una multiplicidad de paradigmas que Darío Villanueva, recogiendo el término de Paul K. Feyerabend, ha denominado proliferación. El presente artículo analiza la relación que el formalismo ruso mantuvo con la FEKS (Fábrica del Actor Excéntrico) y con …
Los pasos apresurados, de Dacia Maraini
2012
Passi affrettati (Pasos apresurados) es una obra nacida en el año 2005 de la mano de Dacia Maraini, su autora, una mujer experimentada y relevante en el campo de las letras y del teatro italiano. De duración corta-media se propone clara y directamente como un teatro de intervención social sobre el maltrato y la violencia contra las mujeres. Parte de la narración-representación de ocho historias «ejemplares» verídicas, procedentes de diversas partes del mundo, protagonizadas por mujeres. Prevé un formato de lectura dramatizada de fácil transporte y siempre un debate final con el público asistente. Su alta eficacia queda probada por las numerosas representaciones exitosas habidas, normalmente…
Un casus de derecho canónico matrimonial en el primer libro del Romanç d'Evast e Blaquerna: una aproximación al texto literario desde el contexto cul…
2010
El articulo incide en la importancia de recurrir al estudio del contexto cultural de los textos literarios medievales, a partir de un ejemplo concreto: la interpretacion del inicio y del capitulo cuarto de la novela de Ramon Llull Romanc d’Evast e Blaquerna. Se propone una lectura que identifica, en la disputa entre los dos protagonistas del primer libro, un tipico casus de derecho canonico matrimonial, lectura contextual que pone de relieve la plena insercion del autor en las coordenadas culturales de su tiempo. L’article incideix en la importancia de tenir present el context cultural dels textos literaris medievals, a partir de la interpretacion de l’inici i del capitol quart de la novel·…
Emerging Raf inhibitors
2009
The Raf/MAPK kinase/extracellular-signal-regulated kinase pathway is often activated by genetic alterations in upstream signaling molecules. An integral component of this pathway, BRAF, is also activated by mutation, especially in melanoma and thyroid cancers. The Raf/MAPK kinase/extracellular-signal-regulated kinase pathway has profound effects on proliferative, apoptotic and differentiation pathways as well as the sensitivity and resistance to chemotherapeutic drugs.This review discusses targeting of Raf which could control abnormal proliferation in cancer and other proliferative diseases. The important roles that genetics plays in the response of patients to Raf inhibitors is also evalua…