%0 Conference Article %T POSSIBILITY OF DIAGNOSING DISEASES BY THE RATIO OF CONCENTRATIONS OF GASES IN EXHALED AIR %A Ageev, B.G. %A Nikiforova, O.Y. %K photoacoustic gas analyzer, carbon dioxide, ammonia %J The XXXI International Symposium "Atmospheric and Ocean Optics. Atmospheric Physics" %D 2025 %P 3 %I V.E. Zuev Institute of Atmospheric Optics, Siberian Branch of the Russian Academy of Sciences