


Each vitamin is typically used in multiple reactions and, therefore, most have multiple functions.
(male, age 19–70)Deficiency disease     Upper Intake Level
and carotenoids)           Fat       900 µg  Night-blindness and
Keratomalacia  3,000 µg           Hypervitaminosis A
Vitamin B2       Riboflavin         Water   1.3 mg  Ariboflavinosis  N/D     ?
Vitamin B5       Pantothenic acid           Water   5.0 mg  Paresthesia       N/D     ?
Vitamin B7       Biotin   Water   30.0 µg Dermatitis, enteritis       N/D     ?
Vitamin C         Ascorbic acid   Water   90.0 mg            Scurvy  2,000 mg          Vitamin C megadosage
Some evidence also suggests that there is a link between vitamin deficiency and mental disorders.
Types of machines and related components
Simple machines           Inclined plane, Wheel and axle, Lever, Pulley, Wedge, Screw
Clock   Atomic clock, Chronometer, Pendulum clock, Quartz clock
Compressors and Pumps          Archimedes' screw, Eductor-jet pump, Hydraulic ram, Pump, Tuyau, Vacuum pump
Heat engines     External combustion engines      Steam engine, 
Internal combustion engines       Reciprocating engine, Gas turbine
Linkages           Pantograph, Peaucellier-Lipkin
Turbine Gas turbine, Jet engine, Steam turbine, Water turbine, Wind generator, Windmill
Aerofoil            Sail, Wing, Rudder, Flap, Propeller
Electronics        Vacuum tube, Transistor, Diode, Resistor, Capacitor, Inductor
Miscellaneous Robot, Vending machine, Wind tunnel,Check weighing machines, Riveting machines