Poisson Arrivals See Time Averages The PASTA property refers to the expected state of a queueing system as seen by an arrival from a Poison process. An arrival from a Poisson process observes the system as if it was arriving at a random moment in time. Therefore, the expected value of any parameter of the queue at the instant of a Poisson arrival is simply the long-run average value of that par...

Before describing the method I adopt in treating syphilis, it is necessary to consider the state of medical opinion upon the subject. Since syphilis has been recognised as a disease, mercury has been trusted to as the chief remedy. In the present day mercury has been called by some a vital antidote to the syphilitic poison. Dr Farquharson, in a recent work on therapeutics, says of mercury in it...

INTRODUCTION Anticoagulant rodenticides have been used for over 50 years to control rodent populations. Since their first introduction, resistance developed in rodents, and second-generation products, more active but also more toxic, have been marketed. These compounds are currently being reviewed under European Regulations. METHODS The purpose of this work is to describe anticoagulant poison...

The haywire gene of Drosophila encodes a putative helicase essential for transcription and nucleotide excision repair. A haywire allele encoding a dominant acting poison product, lethal alleles, and viable but UV-sensitive alleles isolated as revertants of the dominant acting poison allele were molecularly characterized. Sequence analysis of lethal haywire alleles revealed the importance of the...