The parathyroids produce a hormone called parathyroid hormone (PTH). PTHPTH-parathyroid hormone raises the blood calcium level by: 1  breaking down the bone (where most of the body's calcium is stored) and causing calcium release. 2  increasing the body's ability to absorb calcium from food.THPTH-parathyroid hormone raises the blood calcium level by: 1  breaking down the bone (where most of the body's calcium is stored) and causing calcium release. 2  increasing the body's ability to absorb calcium from food.
DN = Diameter Nominal. The term Diameter Nominal refers to the internal diameter of a pipe. Together with the nominal pressure rating and the materials class, all dimensions of a piping line, e. g. flange dimensions, are defined by indicating the nominal diameter. Steel is often not specified, but assumed as material.
By this definition the nominal maximum aggregate size for the material example above is also 1/2. However, if there were only 91% passing the 3/8 the nominal maximum aggregate size for that material would be 3/8, not 1/2.y the CT 382 definition, the maximum aggregate size is 3/4 and the nominal maximum aggregate size is 1/2. In the November 2011 version of CT 202, nominal maximum aggregate size is defined as one sieve size larger than the first size to retain more than 10%..