If you are business minded, a nurse that makes house calls may be the business opportunity for you. In fact, this is historically how most nurses practiced until the 1940s. It is an area with huge growth potential.
Smell is chemistry, and the chemistry of old books gives your cherished tomes their scent. As a book ages, the chemical compounds usedâthe glue, the paper, the inkâbegin to break down. And, as they do, they release volatile compoundsâthe source of the smell. A common smell of old books, says the International League for Antiquarian Booksellers, is a hint of vanilla: âLignin, which is present in all wood-based paper, is closely related to vanillin. As it breaks down, the lignin grants old books that faint vanilla scent.â
Think of your newspaper, for example, which is based on the lower pH levels. Carefully stored, it can have a life expectancy of up to 20 years. Left to light and air which trigger its deterioration, it may last only a few weeks. Acid free means that the paperâs pH is 7.0 (neutral) or higher (alkaline). Acid free papers will last up to 200 years under normal use and storage conditions. Does your direct mail piece really have to last this long? It would be so easy if a paper that is acid free could also be considered permanent. But, you guessed it â¦