abstract since the islamic revolution of 1987, iran has been affected by economic sanctions imposed by western countries, especially the u.s. since 2006 and with the development of the iranian nuclear conflict, the united nations has frequently imposed economic and financial sanctions against iran. as a result of these international restrictions and their administration by an international orga...

the 56th pugwash conference on science and world affairs opened with a key note address by the italian minister of foreign affairs, massimo d’alema, and the un secretary-general ban ki-moon’s message in bari, italy, on 21 october 2008. in the week-long meeting, the participants discussed a wide array of topics related to regional security issues such as the status of nuclear arms control, the r...

The algal excretion product geranylacetone was proved to be an effective and novel inhibitor of carotene synthesis in Synechoccus 6911. The application of geranylacetone resulted in an ac­ cumulation of phytofluene, indicating an inhibition of the conversion of this compound into fcarotene. The cts-isomer of geranylacetone was as effective as the natural irans-isomer. The chloro­ phyll synthesi...