The fission yeast Schizosaccharomyces pombe has emerged as an attractive model organism in the recent years for the study of cytokinesis (Balasubramanian et al., 1997; Gould and Simanis, 1997; Le Goff et al., 1999a). Cell division in S. pombe is achieved through a medially positioned actomyosin ring structure, which is assembled at the onset of anaphase (Bahler et al., 1998). At the end of anap...

Increasing thenumber of taxa in aphylogenetic analysis can have a profound effect on accuracy (Hendy and Penny, 1989; Wheeler, 1992; Hillis, 1996; Graybeal, 1998; Halanych, 1998; Soltis et al., 1998; but see alsoKim, 1996; Poe and Swofford, 1999). Although including all ormost constituent species in analyses attempting to resolve relationships among higher taxa is desirable, it may be impractic...

Hepatitis A outbreaks have been reported in some Jewish Orthodox communities in New York City and New York State. The factors which lead to the transmission of the virus are known: families with a high proportion of children in the lower age groups, large numbers of children in schools which admit them at a very young age, and the close interaction between the various congregations within a reg...

The number of deaths attributed to the intravenous use of heroin has increased dramatically in Victoria in the past five years. Since 1991, the prevalence of deaths attributed to heroin toxicity has risen from 49 to 268 in 1998. This represents a five-fold increase in seven years. The increase has been particularly dramatic over the last 12-months (an increase in over 60%). In 1998 deaths from ...

In 1997, the Ministry of Health Malaysia introduced a surveillance programme for occupational and work-related diseases including poisonings for cases seen in government health facilities. Between June 1997 and November 1998, there were 36 cases of respiratory disease and 95 cases of poisoning by chemicals and pesticides notified while skin diseases were 108 cases. Respiratory diseases reported...

A one-dimensional sea ice-ocean model with its application in the Arctic Ocean is presented. The model includes a mixed-layer ocean model, a multi-layer snow/ice model, and the interfaces among atmosphere, snow/sea ice, and sea water. The observational data from the measurements at the ice station of the Surface Heat Budget of the Arctic Ocean (SHEBA) field experiment between November 1997 and ...

Subtle but important differences are identified between the 1997/1998 and 2015/2016 extreme El Niños that reflect fundamental differences in their underlying dynamics. The 1997/1998 event is found to evolve following the eastern Pacific El Niño dynamics that relies on basin-wide thermocline variations, whereas the 2015/2016 event involves additionally the central Pacific (CP) El Niño dynamics t...

The vulnerability of coral reefs to climate change, such as regional warming, became fully evident during the strong 1997–1998 El Niño event. This El Niño episode was associated with elevated sea-surface temperatures and caused mass mortality throughout many of the world’s coral reefs. We analyzed the isotopic manifestation of this event in six Porites sp. coral skeletons from different localit...