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To that end he took the opportunity in March 2002 to visit several groups in the Research and Technology Directorates in Brussels dealing with futures and the 6th Framework Programme . Several groups in the department investigate the structure , dynamics and signaling properties of cell-matrix and cell-cell adhesions . Both Caplan et al. ( 1992 ) and Weinberger et al. ( 1992 ) , in their studies of breast cancer screening among several groups in the United States , noted that their subjects faced the same barrier , which resulted , in part , from a lack of health promotion and disease prevention practices in the healthcare setting . Currently , several groups in NOAA are using mesoscale Eulerian meteorological models . When the economic clauses came up for revision in 1876 , Tisza himself pressed for a number of concessions , and obtained some of them , but had to renounce others , including the independent National Bank , and after this several groups of deputies seceded from the Liberals to form a " United Opposition " ( the name was changed in 1891 to ' National Party ' ) with a programme of revision of the Compromise by constitutional methods in the direction of more independence , especially in the financial and economic fields . Close interactions with several groups at the University of Alberta will provide opportunities for participation in a variety of other exciting projects . For example , ratings of accommodation in Australia were conducted by several groups until the early 1990s ( www.arta.com.au / ratings ) . For several groups of fungi , these characteristics are not satisfactory to allow identification because of poor or delayed fructifications and furthermore very few experts are available . There have been articles about how such a device can use ordinary explosives to spread lethal radiation ; about how London would be evacuated in the event of such a detonation ; about the Home Secretary David Blunkett 's statement on terrorism in November 2002 that specifically raised the possibility of a dirty bomb being planted in Britain ; and about the arrests of several groups of people , the latest only last month , for allegedly plotting exactly that . However , several groups at MIT may be able to direct you to an appropriate source of information and assistance . For example , we are using nuclear - and plastid-encoded genes to examine the evolution of several groups of chlorophyll a + c - containing microalgae .