Diseases, Conditions, Syndromes

Particulate matter from aircraft engines affects airways

In a unique, innovative experiment, researchers under the leadership of the University of Bern have investigated the effect of exhaust particles from aircraft turbine engines on human lung cells. The cells reacted most strongly ...

Diseases, Conditions, Syndromes

Mucus protects airborne flu virus at all humidities

(HealthDay)—Influenza virus aerosols remain infectious at all humidity levels, according to a study published online June 7 in the Journal of Infectious Diseases.

Health

Lead and other toxic metals found in e-cigarette 'vapors': study

Significant amounts of toxic metals, including lead, leak from some e-cigarette heating coils and are present in the aerosols inhaled by users, according to a study from scientists at Johns Hopkins Bloomberg School of Public ...

Cardiology

E-cigarette vapor slows heart rate in mice

Electronic nicotine delivery systems (ENDS) such as e-cigarettes, affect heart rhythm and cardiovascular function in mice, according to preliminary research presented at the American Heart Association's Scientific Sessions ...

Diseases, Conditions, Syndromes

RSV found in aerosol particles surrounding infants with RSV

(HealthDay)—Infants with respiratory syncytial virus (RSV)-positive bronchiolitis produce large numbers of aerosol particles containing RSV that remain infectious for a significant length of time, according to a study published ...

Diseases, Conditions, Syndromes

Aerosolized measles vaccine inferior to subcutaneous vaccine

(HealthDay)—With respect to seropositivity, aerosolized vaccination against measles is inferior to the subcutaneous vaccine, according to a study published in the April 16 issue of the New England Journal of Medicine.

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Aerosol

Technically, an aerosol is a suspension of fine solid particles or liquid droplets in a gas. Examples are clouds, and air pollution such as smog and smoke. In general conversation, aerosol usually refers to an aerosol spray can or the output of such a can. The word aerosol derives from the fact that matter "floating" in air is a suspension (a mixture in which solid or liquid or combined solid–liquid particles are suspended in a fluid). To differentiate suspensions from true solutions, the term sol evolved—originally meant to cover dispersions of tiny (sub-microscopic) particles in a liquid. With studies of dispersions in air, the term aerosol evolved and now embraces both liquid droplets, solid particles, and combinations of these. The Earth atmosphere contains aerosols of various types and concentrations, including quantities of:

By far the most common aerosols in the atmosphere are clouds, which normally consist of suspensions of water droplets or ice particles of greater or lesser density.

Aerosols can be found in urban Ecosystems in various forms, for example:

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