Educator's Guide for Mission to Earth: LANDSAT Views the World

This teacher's guide is specifically designed to provide information and suggestions for using LANDSAT imagery to teach basic concepts in several content areas. Content areas include: (1) Earth science and geology; (2) environmental studies; (3) geography; and (4) social and urban studies

Using Polarized Spectroscopy to Investigate Order in Thin-Films of Ionic Self-Assembled Materials Based on Azo-Dyes

Three series of ionic self-assembled materials based on anionic azo-dyes and cationic benzalkonium surfactants were synthesized and thin films were prepared by spin-casting. These thin films appear isotropic when investigated with polarized optical microscopy, although they are highly anisotropic. Here, three series of homologous materials were studied to rationalize this observation. Investigating thin films of ordered molecular materials relies to a large extent on advanced experimental methods and large research infrastructure. A statement that in particular is true for thin films with nanoscopic order, where X-ray reflectometry, X-ray and neutron scattering, electron microscopy and atom force microscopy (AFM) has to be used to elucidate film morphology and the underlying molecular structure. Here, the thin films were investigated using AFM, optical microscopy and polarized absorption spectroscopy. It was shown that by using numerical method for treating the polarized absorption spectroscopy data, the molecular structure can be elucidated. Further, it was shown that polarized optical spectroscopy is a general tool that allows determination of the molecular order in thin films. Finally, it was found that full control of thermal history and rigorous control of the ionic self-assembly conditions are required to reproducibly make these materials of high nanoscopic order. Similarly, the conditions for spin-casting are shown to be determining for the overall thin film morphology, while molecular order is maintained

Between mundane and extreme: the nature of work on the UK supermarket frontline during a public health crisis

The normally low-risk and routinised nature of supermarket frontline work evolved drastically amid the COVID-19 pandemic. Drawing on a refined conceptual framework of extreme work, this article examines how the public health crisis coupled with maxinisation of organisational flexibility gives rise to extremity in mundane work settings. The findings based on 50 interviews with workers and managers who worked throughout the pandemic on the UK supermarket frontline offer empirical insights into the macro-micro dynamics of extreme-mundane work. These insights reveal a nuanced narrative of supermarket work as both alienating, owing to the frequent encounters of abuse and undervalued responsibilities, and fulfilling as a respite from social isolation induced by the pandemic. This narrative illustrates the complexities of individual motivations to engage with extreme work, while highlighting a need for structural support in coping with elevated exposure to risks and uncertainties. The article argues that the nature of work and workplaces in the face of extreme externalities remains contingent upon human resource management practices on the frontline of a crisis

Plan of the city of Barcelona

Gravat calcogr., sobre paper verjurat

Plan of the incampment of the Allies at Prats del Rey under the command of count Staremberg, and of ye enemy under the Duke of Vendosme, where the two Armies lay from ye 17th of Septem.r to ye 25th of Decemb.r, 1711. When ye Enemy decamped, and ye Allies the 27th.

Lloc i data de publicació extret de l'obra a la que pertany

Plan of Cardona : a strong city and castle of Catalonia, upon the river Cardoner as besieged by the French and defended by the Allies /

Gravat calcogr., sobre paper verjurat.LLoc i data de publicació extret de l'obra a la que pertany.Al document: Scale of 300 toises

Plan of the Camp of Tarragona

Gravat calcogr., sobre paper verjurat