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Thermal work limit (TWL) is an index defined as the maximum sustainable metabolic rate that well-hydrated, acclimatized individuals can maintain in a specific thermal environment within a safe deep body core temperature (< 38.2 °C or 100.8 °F) and sweat rate (< 1.2 kg or 2.6 lb per hour). [1] The index is designed for self-paced workers and ...
Occupational heat stress. Occupational heat stress is the net load to which a worker is exposed from the combined contributions of metabolic heat, environmental factors, and clothing worn, which results in an increase in heat storage in the body. [1] Heat stress can result in heat-related illnesses, such as heat stroke, hyperthermia, heat ...
In humans, hyperthermia is defined as a temperature greater than 37.5–38.3 °C (99.5–100.9 °F), depending on the reference used, that occurs without a change in the body's temperature set point. [3][10] The normal human body temperature can be as high as 37.7 °C (99.9 °F) in the late afternoon. [2] Hyperthermia requires an elevation from ...
Residual stress. Residual stress in a roll-formed hollow structural section causes it to gape when cut with a band-saw. In materials science and solid mechanics, residual stresses are stresses that remain in a solid material after the original cause of the stresses has been removed. Residual stress may be desirable or undesirable.
A heat sink (aluminium) incorporating a heat pipe (copper) All electronic devices and circuitry generate excess heat and thus require thermal management to improve reliability and prevent premature failure. The amount of heat output is equal to the power input, if there are no other energy interactions. [ 1 ]
Heat stroke or heatstroke, also known as sun-stroke, is a severe heat illness that results in a body temperature greater than 40.0 °C (104.0 °F), [4] along with red skin, headache, dizziness, and confusion. [2] Sweating is generally present in exertional heatstroke, but not in classic heatstroke. [5] The start of heat stroke can be sudden or ...
Thermotolerance. Thermotolerance is the ability of an organism to survive high temperatures. An organism's natural tolerance of heat is their basal thermotolerance. [ 1] Meanwhile, acquired thermotolerance is defined as an enhanced level of thermotolerance after exposure to a heat stress. [ 2]
Palm cooling (often referred to as palmar cooling) is a type of recovery intervention that involves cooling the palm of the hand [1] during rest periods between bouts of strenuous physical activity. The palm cooling modality can be used to moderate increases in core temperature [1][2] resulting from the level of physical activity, the wearing ...