With more education and experience, accountants can become certified. Some financial documents, such as those submitted to the Securities and Exchange Commission, must be signed by a Certified Public Accountant.
Hyperchromicity is the increase of absorbance (optical density) of a material. The most famous example is the hyperchromicity of DNA that occurs when the DNA duplex is denatured. The UV absorption is increased when the two single DNA strands are being separated, either by heat or by addition of denaturant or by increasing the pH level.
thermal induced skin necrosis. extreme cold impairs blood flow and denatures enzymes while extreme heat denatures enzymes. lead toxicity and neuronal/renal tubular necrosis. chemical/drug causes of cell injury.