Reports that British alpine skiing bronze medalist Alain Baxter has been stripped of the medal he won in the 2002 Winter Olympics in Salt Lake City, Utah for doping. Results of his drug test, which showed traces of methamphetamine he may have ingested after using a decongestant; Similar ...
When someone inhales, they bring air into their lungs, which allows it to enter the bronchial tubes. From the bronchial tubes, the air reaches tiny sacs of air known as alveoli. The walls of the alveoli are thin enough for oxygen to pass through to the surrounding blood vessels. The oxyg...
You only need to repair that broken shelf in the walk-in freezer and then you can go home. After you enter the frigid air, you decide it might be a good idea to get your sweatshirt -- the shelf may take a few minutes to fix. You push the door but nothing happens. Then you try...
If hot air approaches a colder air mass, the hot air will rise above the cold air because it is not as dense. When this happens, clouds form from the...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer ...
What happens when methane is burned?Combustion Reactions:When hydrocarbons are burned in oxygen, they produce water and carbon dioxide. This is known as a combustion reaction. A combustion reaction is exothermic, which means it releases heat....
you would inhale from the air around you," Marr said about masks.No mask is 100% effective. An N95, for example, is named as such because it is at least 95% efficient at blocking airborne particles when used properly. But even if a mask has an 80% efficiency, Marr said, it still ...
What Happens During a Respirator Fit Test? During a fit test, a person is exposed to a test substance, such as a non-hazardous pungent odor or an irritant smoke, while wearing the respirator. If the person can smell or taste the test substance while wearing the respirator, this means the...
When this happens, the stain "disappears." When bleach oxidizes the ketchup on your T-shirt, the ketchup stops being able to absorb light. It then appears white, like the rest of the shirt. The remains of the ketchup can still be there; you just won't see the stain anymore. Soaking ...
Changes in one's breathing pattern is also a sign. You may experienceshortness of breath. This happens because of the cancer blocking or narrowing the airway. Wheezinghappens when the airway becomes constricted, blocked, or inflamed, and the lungs produce a wheezing or whistling sound when you...
Laryngitis happens when your vocal cords become inflamed. Inflammation may be due to infection, irritation, or overuse. When your vocal cords swell, it can make your voice hoarse or cause you to lose your voice entirely. Other symptoms of laryngitis may include: Dry cough Dry throat Sore or ...