The 1982 ultraviolet eclipse of the symbiotic binary AR PAV

Observations with the International Ultraviolet Explorer (IUE) of the symbiotic binary AR Pav through its 1982 eclipse show that the hot star is not eclipsed. The hot star is associated with an extended region of continuum emission which is partially eclipsed. The eclipsed radiation is hotter near to its center, with a maximum temperature of about 9000 K. The uneclipsed flux is hotter than this. UV emission lines are not measurably eclipsed and presumably arise in a much larger region than the continuum. These data provide new constraints on models of the system but also are apparently in contradiction to those based on ground-based data.Peer reviewed: YesNRC publication: Ye

Analysis for Secondary Structure of Variable Regions of 16S rRNA of the Family Yaniaceae

Secondary structrue of nine variable regions of 16S rRNA of members of the Family Yaniaceae and related family and genera were selected. Patterns of the variable regions were anylysed and compared. Result indicates that the Family Yaniaceae is different from members of the suborder micrococcineae in numbers and size of cycles, stem and single chains of 9 variable regions, and proposal of the family Yaniaceae is reasonable. These data suggest that pattern analysis can be used as one criteron in charactrization of bacteria over general level