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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