منابع مشابه
53 Persei : a slowly pulsating B star ?
A new investigation of the behaviour of the star 53 Per was performed. New photometric observations allow to confirm twodominant periods p1=2.16 d, p2= 1.67 d.A third one p3= 3.64 d is detected. These long period variations are present in our radial velocities data and in old equivalent width data. The amplitude of the p1 = 2.16 d period increases from 1977 to 1991, while the amplitude of the 1...
متن کاملGas and Dust Associated with the Strange, Isolated Star Bp Piscium
We have carried out a multiwavelength observational campaign demonstrating some of the remarkable properties of the infrared-bright variable star BP Psc. Surrounded by a compact dusty, gaseous disk, this little-studied late G (or early K) type star emits about 75% of its detected energy flux at infrared wavelengths. Evidence for accretion of gas in conjunction with narrow bipolar jets andHerbig...
متن کاملSpc42p: A Phosphorylated Component of the S. cerevisiae Spindle Pole Body (SPB) With an Essential Function During SPB Duplication
The 42-kD component of the S. cerevisiae spindle pole body (SPB) localizes to the electron-dense central plaque of the SPB (Rout, M.P., and J.V. Kilmartin. 1991. Cold Spring Harbor Symp. Quant. Biol. 56:687--691). We have cloned the corresponding gene SPC42 (spindle pole component) and show that it is essential. Seven temperature-sensitive (ts) mutants in SPC42 were prepared by error-prone PCR....
متن کاملLactococcus piscium: a psychrotrophic lactic acid bacterium with bioprotective or spoilage activity in food-a review.
The genus Lactococcus comprises 12 species, some known for decades and others more recently described. Lactococcus piscium, isolated in 1990 from rainbow trout, is a psychrotrophic lactic acid bacterium, probably disregarded because most of the strains are unable to grow at 30°C. During the last 10 years, this species has been isolated from a large variety of food: meat, seafood and vegetables,...
متن کاملLocalization of Core Spindle Pole Body (SPB) Components during SPB Duplication in Saccharomyces cerevisiae
We have examined the process of spindle pole body (SPB) duplication in Saccharomyces cerevisiae by electron microscopy and found several stages. These include the assembly, probably from the satellite, of a large plaque-like structure, the duplication plaque, on the cytoplasmic face of the half-bridge and its insertion into the nuclear envelope. We analyzed the role of the main SPB components i...
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ژورنال
عنوان ژورنال: International Astronomical Union Colloquium
سال: 2002
ISSN: 0252-9211
DOI: 10.1017/s0252921100016110