Risk which is common to an entire class of assets or liabilities. The value of investments may decline over a given time period simply because of economic changes or other events that impact large portions of the market.
Properties of the alpha-helix. 1  The structure repeats itself every 5.4 Angstroms along the helix axis, ie we say that the alpha-helix has a pitch of 5.4 Angstroms. Alpha-helices have 3.6 amino acid residues per turn, ie a helix 36 amino acids long would form 10 turns.
Materials exhibit myriad properties, including the following. 1  Mechanical properties, see Strength of materials. 2  Chemical properties, see Chemistry. 3  Electrical properties, see Electricity. 4  Thermal properties, see Thermodynamics. 5  Optical properties, see Optics and Photonics. 6  Magnetic properties, see Magnetism.