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The problem is people increasingly think they are at least as harmful and this may be keeping millions of smokers from quitting

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

Smell of cigarettes VS smoke-free alternatives IQOS vs Cigarettes As an adult smoker, you are certainly aware of the lingering smell that cigarette smoke produces

Your mom is a lousy hider of things. I said, I didnt kill myself because of youand your mom, and your brother and sister

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