grid ratio a ratio comparing the height of lead lines in an x-ray grid to the distance between the lead strips. inspiratory-expiratory ratio the ratio of the inspiratory time to the expiratory time during the breathing cycle.ignal-to-noise ratio the ratio between the amplitude of a signal being measured and that of the noise. urea excretion ratio the ratio of the amount of urea in the urine excreted in one hour to the amount in 100 ml of blood. The normal ratio is 50.
Bijak is the best known of the compilations of the compositions of Kabir, and as such is the holy scripture for followers of the Kabirpanthi religion.
Fredrik SjÃ¶berg: 'I realised I had to write my book for people not interested in flies'. Fredrik SjÃ¶berg spent seven years hunting hoverflies on a small Swedish island and then wrote a genre-defying memoir about it. 'I really love this because it was a room of my own' â¦ Fredrik SjÃ¶berg on the island RunmarÃ¶ in Sweden. Photograph: Arni Torfason/Demotix.