A judge has been expected to rule in a court battle between Penney and Macy's over whether Macy's has an exclus | ASSOCIATED PRESS. 24/7 Wall St. : Brick-and-mortar retailers have been suffering from slow economic activity for years, as well as from increased competition from online retailers. The rise in store closings is a prominent sign of their struggles.
Gel electrophoresis is one of the principal tools of molecular biology. The basic principle is that DNA, RNA, and proteins can all be separated by means of an electric field and size.
A handheld nibbler is one of the most versatile power tools available for sheet metal cutting. It acts much like a very small mouthed scissor-style snip. The jaws make a series of small cuts in rapid succession to create a line through the metal. They are moderately priced and easy to learn how to use.