Koch's postulates are a series of conditions that must be met for a microorganism to be considered the cause of a disease. German microbiologist Robert Koch (1843-1910) proposed the postulates in 1890. Koch originally proposed the postulates in...

Four rules devised in 1884 by the German physicist Robert Koch to ascertain whether or not the cause of an infection had been established. The rules relate to four stages – the first is to find evidence that the infection is caused by a microbe,...

Robert Koch was the first scientist to firmly establish the link between germs and disease. A doctor with a small rural practice in Germany, Koch's interest in microscopic studies led him eventually to identify the bacteria that causes the...

Koch's postulates (or Henle-Koch postulates) are four criteria designed to establish a causal relationship between a causative microbe and a disease. The postulates were formulated by Robert Koch and Friedrich Loeffler in 1884 and refined and published...

INTRODUCTION Common sense says that energy efficiency gains will reduce energy demand below where it otherwise would be. So evident is this that most countries' energy policies--not to mention oil industry forecasts and many academic writings--take it as a cornerstone fact. In...

Abstract Identificative copulatives in Southern Ndebele: evidence for diachronic postulations in Zulu Southern Ndebele is the language with the smallest number of speakers of all eleven official languages of South Africa. It is thus not surprising that there is no comprehensive...