'TAHE first of the two annual conversaziones which A are given by the Royal Society in its rooms at Burlington House, took place on Wednesday evening, May 16. There was a large attendance, and throughout the evening interested groups were gathered round the exhibits which were shown in the Officers' Room, the Council Room, the Old Council Room, the Principal Library, the Committee Room, and the...

فاصله بین سقوط ایلخانان (736 ق) تا روی کار آمدن صفویان (907 ق) از پرآشوب­ترین و آشفته­ترین دوره­های تاریخ ایران است که عرصه را برای نضج و قدرت­گیری حکومت­های مختلفی در گوشه و کنار ایران فراهم آورد. جغرافیای سیاسی قبایل کُرد در غرب و شمال غرب که صحنه قدرت­نمایی آل جلایر، تیموریان، قراقویونلوها و آق قویونلوها بود از جمله حوزه­های موردتوجه و فعالیت حکومت­های مورد اشاره بود. پژوهش حاضر درصدد پژوهش د...

Centro Nacional de Biotecnología, Campus Univ. Autónoma, 28049 Madrid, Spain, Health Research Inc., Howard Hughes Medical Institute at Wadsworth Center, Empire State Plaza, Albany, NY 12201-0509, and Department of Biomedical Sciences, State University of New York at Albany, University of Konstanz, Department of Biology, 78457 Konstanz, Germany, Max-Planck-Institut fur Biophysik, Frankfurt, Germany

This paper describes the purification of polysomal RNA from SV40-lytically infected CV1 (monkey) cells and separation of the two distinct classes of SV40-specific mRNA sedimenting at 16 S and 19 S. These classes have been hybridized with the whole SV40 DNA genome as well as with the SV40 Hind fragments. The results have permitted the mapping of SV40-specific late 16 S mRNA from approximately 0....