1 Time-Pathogenic bacteria need enough time in order to multiply. 2  The number of bacteria will reach dangerous levels very quickly in a short period of time in perfect conditions. 3  Keep in mind that bacteria can reproduce every 20 minutes in perfect conditions.
Nuclear chemistry is a sub-discipline of chemistry that involves the chemical reactions of unstable and radioactive elements where both electronic and nuclear changes may occur. The substance (or substances) initially involved in a chemical reaction are called reactants or reagents. Chemical reactions are usually characterized by a chemical change, and they yield one or more products, which usually have properties different from the reactants.
A formant, as defined by James Jeans, is a harmonic of a note that is augmented by a resonance. Speech researcher Gunnar Fant defined formants as the spectral peaks of the sound spectrum |P(f)|. In acoustics generally, a very similar definition is widely used: the Acoustical Society of America defines a formant as: a range of frequencies [of a complex sound] in which there is an absolute or relative maximum in the sound spectrum.