in this paper, an exchange of letters between the philosopher jacques derrida and architect peter eisenman is used as a catalyst to discuss the material qualities of glass and its relationship with the concept of transparency in architecture. in his criticism of an architecture devoid of human qualities, derrida uses glass, defined through walter benjamin’s writings, as a hard and cold material...

Studies on models synthesized by stereochemically controlled routes show that the central triene chromophore in the common cis isomer of phytoene has the irans,cis,trans configuration, and that the phytoene from Flavobacterium dehydrogenans consists mainly of the all-trans isomer. Capsorubin, with the natural configuration at all four chiral centres, has been synthesized from (+)-camphor. Sever...

Mohammad-Karim Pirnia, one of the most prominent scholars of the history of Iranian architecture, has recorded two major achievements: the principles of Iranian architecture and the stylistics of Iranian architecture. In this article we will discuss his suggested principles for Iranian architecture. For this purpose, we will first show how his five principles have evolved and completed th...

the political and social system involved in the limbo between tradition and modernity of the qajar era caused widespread and quick developments in iranian culture, art, and architecture as well as a challenge between tradition and modernity. relatively numerous palaces built in this era were signs of greatness and distinction-seeking of the qajar kings and aristocrats, who embraced all transfor...