Aspirin is a salicylate (sa-LIS-il-ate). It works by reducing substances in the body that cause pain, fever, and inflammation. Aspirin is used to treat pain, and reduce fever or inflammation. It is sometimes used to treat or prevent heart attacks, strokes, and chest pain (angina). Aspirin should be used for cardiovascular conditions only under the supervision of a doctor.
Nitrogen Grade Standards. Nitrogen is used across many industries for different purposes. Although certain names of grades are very common, the actual grades of nitrogen are not standardized across industries or even within industries. Ultimately, the manufacturer of the nitrogen chooses the name of the grade to categorize the nitrogen. For this reason, it is possible to have two nitrogen products with the same purity specifications, but listed in grades with different names. It is also possible for two nitrogen products within the same grade to have different purity specifications. It is important to select a nitrogen product based on its purity specifications and not solely its grade.
The phosphate group and sugar are the same in every nucleotide, but there are four different nitrogenous bases: guanine, adenine, thymine and cytosine. They are often abbreviated by the first letter of each nitrogenous base: G, A, T and C.