A team of scientists have invented a technique to determine the dynamics of microscopic interacting particles by using image recognition to count the number of particles in an imaginary box. By ...

A simple, dependable method has been described for counting particles of chlymydiae in partially purified suspensions. A latex-particle suspension of known concentration is used as a standard. The ...

The fluctuation of the counts of particles in m regions are used to yield an estimate of a fundamental motion parameter. The effect of varying m on the precision of the estimation method is considered ...

THE advances which have been made in the measurement of hæmoglobin concentration have been largely offset from the clinical point of view by the continued inaccuracy of the red cell count. Hæmoglobin ...