Three famous pharmacists were working in the Muséum national d'histoire naturelle in Paris, in the field of earth sciences: Louis Nicolas Vauquelin (1763-1829), André Laugier (1770-1832) and Alfred Lacroix (1863-1948). Vauquelin, professor of Chemical arts, established the chemical composition of numerous minerals, which led him to the discovery of new chemical elements. He also took a hand in demonstrating the extra-terrestrial origin of meteorites. Laugier, professor of General chemistry, was an admitted expert in the analytical field of these rocks. Lacroix, who held during more than forty years the chair of Mineralogy in the Museum, carried out major scientific work. This field working naturalist who was also famous vulcanologist placed his studies of the mineral species into a petrographical context. He described numerous new minerals, took an interest in their origin and classification of the volcanic rocks, as well as in contact metamorphism. In other respects, he increased the collections in the Museum (minerals, rocks, meteorites). The works of Vauquelin, Laugier and Lacroix contributed to advance those begun by some scientists of the Jardin du Roi, as Buffon or the Rouelle brothers before the French Revolution.
Der Beitrag beschreibt die Planung und Ausführung der Hüllkonstruktionen (Fassaden und Dächer) für das Theater und die Konzerthalle des Arts Centre in Singapore, das den Namen "Esplanade" trägt. Ausgehend von der Geometrie der Freiformflächen werden der computergestützte Planungsprozeß und die Realisierung mit Hilfe eines Bausystems beschrieben. Durch Anwendung komplexer geometrischer Regeln konnte die Vielfalt der Konstruktionselemente (Stäbe und Knoten, Glasscheiben und Schattenelemente) reduziert und die Logistik von Planung, Fertigung, Versand und Montage beherrschbar gemacht werden.
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