The stable isotope concentrations of a molecular compound or material are presented in ratio form as the molar ratio of the heavy-to-light isotopes. Since this ratio is small, we typically present ...

This group has now shown that a low ratio of these tau forms reliably differentiates patients with PSP from controls and patients with parkinsonian syndromes or neurodegenerative illnesses that ...

A farmer has 2 cats and 5 dogs. Write down the ratio of cats to dogs and dogs to cats. The same farmer also has 85 sheep and 15 cows. Write down the ratio of cows to sheep in its simplest form.