The Hunt for Maya Purple: Revisiting Ancient Pigments Syntheses and Properties

The Maya Forest: destroyed or cultivated by the ancient Maya?

B oth academic and popular perceptions concerning the relationship between the Maya (ancient and modern) and the Maya Forest in which their culture developed and persisted formore than three millennia are varied and continuously subject to change (1). The analysis of a sediment core from a pond located near the ancient Maya city of Copan, Honduras, interpreted byMcNeil et al. (2) in this issue ...

MENU FOR THE ANCIENT MAYA Modeling Considerations

The fractal geometry of ancient Maya settlement

Ancient Maya settlement patterns exhibit fractal geometry both within communities and across regions. Fractals are self-similar sets of fractional dimension. In this paper, we show how Maya settlement patterns are logically and statistically self-similar. We demonstrate how to measure the fractal dimensions (or Hausdorff–Besicovitch dimensions) of several data sets. We describe nonlinear dynami...

Charge stabilization mechanism in the visual and purple membrane pigments.

The effects of charged groups of rhodopsin and bacteriorhodopsin on the potential energy surface of their chromophore are examined, taking into account the protein dielectric effect. It is found that the barriers for twisting double bonds of an isolated chromophore can be drastically reduced when the chromophore interacts with the protein charges. New types of local minima are found in the grou...

the search for the self in becketts theatre: waiting for godot and endgame

this thesis is based upon the works of samuel beckett. one of the greatest writers of contemporary literature. here, i have tried to focus on one of the main themes in becketts works: the search for the real "me" or the real self, which is not only a problem to be solved for beckett man but also for each of us. i have tried to show becketts techniques in approaching this unattainable goal, base...