tobacco origins – Shamans and Smokers Mysterious Origins of The Nicotine

Samples used in the study belonged to popularly used brands

Come with us

ICA has cracked 44,000 cases of prohibited items, an increase of 2.3% year-on-year

Access this article Similar content being viewed by others Abbreviations A: Effective collection area, m 2 C: Concentration, g/m 3 CADR: Clean air delivery rate, m 3 /h Cu: Cunningham slip correction factor, - E c : Electric field strength, V/m E c *: Modified electric field strength, V/m K : Ion charge coefficient, - Q : Volumetric airflow rate, m 3 /h V+: Positive voltage applied to ionizer, V V- : Negative voltage applied to ionizer, V d p : Positive voltage applied to ionizer, V k: Concentration decay rate, 1/h n p : Number of charges per particle, - n p *: Effective ion concentration including K coefficient, ions/cm 3 w: Particle migration velocity, m/s : Incorporation of ionizer-filter interaction factor, - : Mean free path of air molecules, m : Dynamic viscosity of air, Pas i : Particle removal efficiency by ionizer, - i *: Modified particle removal efficiency by ionizer, - f : Particle removal efficiency by filter, - total : Combined removal efficiency with ionizer and filter, - f: Filter i : Ionizer total: Combined total with ionizer and filter est: Estimated value exp: Experimental value particle: Particle filter PM2.5: High-efficiency PM2.5 filte single: Single polarity ionization both: Dual polarity ionization both (+) and (-) ion References Abi-Esber, L., & El-Fadel, M