Niels Bohr was born and educated in Copenhagen, Denmark. He lived, worked, and died there, too. But his mark on science and history was worldwide. His professional work and personal convictions were part of the larger stories of the century.
Salivary pH Test: While generally more acidic than blood, salivary pH mirrors the blood (if not around meals) and is also a fairly good indicator of health. It tells us what the body retains. Salivary pH is a fair indicator of the health of the extracellular fluids and their alkaline mineral reserves.
More light is absorbed when more cells are present-some people like this measure better because absorbance goes up as turbidity (or cell number) goes up. Another indirect way of estimating bacterial numbers is measuring the metabolic activity of the population (for example, acid production or oxygen consumption). For filamentous organisms such as fungi, measuring dry weight is a convenient method of growth measurement.