Characterisation of montmorillonites simultaneously modified with an organic dye and an ammonium salt at different dye/salt ratios. Properties of these modified montmorillonites EVA nanocomposites

In this work, a sodium montmorillonite (Na+-Mt) was modified with two molecules simultaneously, an organic dye, methylene blue (MB), and ethyl hexadecyl dimethyl ammonium (EHDDMA). The synthesised organo-montmorillonites (OMt) combining different proportions of the two molecules were thoroughly characterised and mixed with ethylene vinyl acetate copolymer (EVA) in order to check the ability of these OMt as pigments and reinforcing additives. The synthesised OMt combining both surfactants, MB and EHDDMA, present higher interlayer distances than those with only MB, which were employed in previous works as nanopigments. When these OMt were incorporated in the EVA matrix, the obtained clay polymer nanocomposites (CPN) showed a high exfoliation degree of the OMt in the polymer, in such a way that at 80% of the cationic exchange capacity (CEC) of the Mt exchanged with EHDDMA, most of the OMt was exfoliated. Moreover, all the obtained CPN showed an increase in the Young's Moduli compared to the EVA reference, and especially those containing higher amounts of MB. The thermal stability of the CPN also increases with the MB content, compared to other CPN including conventional surfactants. The hiding power and colouring power achieved in the CPN are higher even with a much lower load of MB when EHDDMA is exchanged in the Mt.

Los homenajes a Eva Perón como prácticas de memoria en tiempos de la Resistencia peronista (1955-1963)

El objetivo de este artículo apunta a visualizar los homenajes efectuados en memoria de Eva Perón como instancias de participación en la Resistencia peronista (1955-1963), a partir del análisis de fuentes periodísticas, informes de inteligencia y entrevistas. La observación de este tipo de prácticas nos ha permitido analizar cómo se realizó el proceso de construcción de memoria durante esta etapa y sus anclajes materiales, el carácter religioso que impregnó a dichas prácticas, y cómo la imagen de Eva Perón se constituyó en una instancia de legitimación para la participación política femenina, aunque fueron atributos conservadores los que habilitaron dicha participación

(Table 2) pH and concentrations of dissolved and particulate chemical elements in the mixing zone of the Yur'eva River water and the Okhotsk Sea water

Data on behavior of iron, manganese, nickel, copper, and zinc in the zone where acidic volcanic waters of the Yur'eva River (Paramushir Island, Kuril Islands) mix with sea water are presented. Distributions of dissolved and particulate forms of these elements indicate that the mixing zone acts as a pH-based geochemical barrier, at which almost all dissolved iron and smaller amounts of other metals are precipitated. When chemogenic particulate matter formed in the mixing zone enters the open ocean, it can sorb trace elements from sea water.

Eva : memorias de dos huérfanos /

Mode of access: Internet.

Eva; or, The error. A play in five acts ...

Mode of access: Internet.

FMVSS 212, 219, 301, testing of electric vehicles - Electric Van 600, EVA Pacer. Final report.

National Highway Traffic Safety Administration, Washington, D.C.

Permskai︠a︡ starina : sbornik istoricheskikh stateĭ i materīalov preimushchestvenno o Permskom krai︠e︡, Aleksandra Dmitrīeva.

vyp.1. Drevnosti byvsheĭ Permi Velikoĭ -- vyp.2. Permʹ Velikai︠a︡ v XVII vi︠e︡ki︠e︡ -- vyp.3. Ėkonomicheskīe ocherki Permi Velikoĭ -- vyp.4. Stroganovy i Ermak -- vyp.5. Pokorenīe ugorskikh zemelʹ i Sibiri -- vyp.6. Pervye gody posli︠e︡ Ermaka i smutnoe vremi︠a︡ -- vyp.7. Verkhoturskīĭ kraĭ v XVIII vi︠e︡ki︠e︡.

Space shuttle : EVA opportunities.

Bibliography: p. 20.

Eva; romanzo.

Mode of access: Internet.

Kīevskīĭ sẏnopsis ili kratkoe sobranīe ot razlichnykh li︠e︡topist︠s︡ov o nachali︠e︡ slavenorossīĭskago naroda i pervonachalʹnykh kni︠a︡zekh bogospasaemago grada Kīeva...

Mode of access: Internet.

Compendio de las tres leyes, natural, escrita y evangélica : perdida de la gracia en Adan y Eva y su reparacion en IHS y [Maria] /

Mode of access: Internet.

Eva y Ave, o Maria triunfante : theatro de la erudicion, y philosofia christiana, en que se representan los dos estados de el mundo, caido en Eva, y levantado en Ave : primera, y segunda parte /

Mode of access: Internet.

Pami︠a︡ti Viktora Aleksandrovicha Golʹt︠s︡eva : statʹi, vospominanii︠a︡, pisʹma /

Spine title: Pami︠a︡tʹ Golʹt︠s︡eva.

Lekt︠s︡īi po istorīi russkago zakonodatelʹstva I.D. Bi︠e︡li︠a︡eva.

Includes bibliographical references.