Abbreviation or prefix (abbr.) brevis-short unit symbol for gram is: g. How many grams of gold are in 1 ounce (troy)? The answer is: The change of 1 oz t (ounce (troy)) unit of a gold amount equals = to 31.10 g (gram) as the equivalent measure for the same gold type.
Congestion is as inevitable during cold weather as rain and snow. Cold air can cause chest and nasal congestion by increasing and thickening mucus, irritating nasal tissue and even triggering allergic reactions. But while you may not be able to avoid the cold weather, you can often treat the symptoms of congestion.
Dark mucus does not necessarily mean that you have developed a bacterial infection, but if you are coughing up dark material -- or feeling a lot of distress low down in your lungs -- you may have a bacterial infection. These symptoms can also be caused by a cold virus other than a rhinovirus. Usually there is no fever; in fact, fever and more severe symptoms may indicate that you have the flu rather than a cold. Cold symptoms typically last for about 3 days.