Optical changes and writing on hydrotalcite supported gold nanoparticles

Gold nanoparticles (AuNP) incorporated into hydrotalcite (HT), provide an interesting type of pigment in which temperature can modulate the plasmon resonance and the aggregation phenomenon. As inferred from microscopy techniques, the preferential binding sites are located at the border of the HT external basal surface, leading to aggregates of gold nanoparticles displaying characteristic plasmon resonance and interference bands around 520 and 700 nm, respectively. The thermally induced color changes in the HT-supported gold material arise from the competition between of nanoparticles aggregation and fusion processes, as characterized by TEM and STM. A laser beam can also induce such changes, allowing the writing of optical information on this type of material.

Being made redundant: from 'the writing on the wall' to 'a bolt from the blue' - 'being disposed of' as a human tragedy

This paper focuses on the experience of being made redundant. A qualitative study conducted in Australia involved phenomenological, in-depth interviews with middle- and senior-level executives. Ten respondents were interviewed about their experiences of being made redundant. What is evident from their stories is a clear passage of "being disposed of" differing only in whether their fate was evident prior to their disposal - "the writing on the wall" - or whether it was a complete shock - "a bolt from the blue". Ultimately, whether respondents knew what was coming or not, the process was often shocking, hurtful, humiliating, and harsh. Many respondents reported going through the process of being made redundant more than once. All believed it could have been handled better.

Clio may be seen and listened. Movies as source and resource on history

El cine como fuente historiográfica es utilizado a partir de la "batalla" que dio Marc Ferro hacia el interior de Annales. Cuando era difícil que se aceptaran otras fuentes que no fueran las gráficas, este historiador logró abrirse camino hasta llegar a ser el director de Annales en los años '70. El discurso de la imagen o el discurso audiovisual representa con mayor verosimilitud lo que el discurso gráfico no alcanza a expresar. Sin embargo, la sinécdoque y la generalización se encuentran a mitad de camino en un juego representativo para complementarse a la hora de comprender y reconstruir el pasado. El aporte del cine puede tomarse como reflejo o representación social y también como una alternativa discursiva. En este sentido, Rosenstone con el apoyo de Hayden White y su análisis de la "historiofotía" son los que incursionan en esta nueva dimensión, esto es la narración audiovisual de la historia

A district conference held at Gary on history teaching in the secondary schools,

Mode of access: Internet.

Henry Morse Stephens collection; pamphlets on history.

Binder's title.

Pantologia. A new cyclopaedia, comprehending a complete series of essays, treatises, and systems, alphabetically arranged; with a general dictionary of arts, sciences and words ... illustrated with engravings, those on history being from original drawings by Edwards and others ...

Mode of access: Internet.

[Miscellaneous bulletins on history of the tariff]

Mode of access: Internet.

Lectures on history, and general policy : to which is prefixed, an Essay on a course of liberal education for civil and active life : and an additional lecture on the Constitution of the United States : the whole corrected, improved and enlarged: with a chart of history and a chart of biography /

"From the press of William Spotswood."--p. 388.

The law of civilization and decay; an essay on history,

Mode of access: Internet.