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Related Concept Videos

Responses to Heat and Cold Stress02:45

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Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
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Concreting at elevated temperatures accelerates the hydration process, leading to quicker setting but potentially reducing the long-term strength of the concrete structure. Additionally, low air humidity fosters rapid moisture loss from the concrete, resulting in reduced workability, pronounced plastic shrinkage, and a higher likelihood of crazing.
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Thermal Stress01:09

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If the temperature of an object is changed while it is prevented from expanding or contracting, the object is subjected to stress. The stress is compressive if the object expands in the absence of constraint and tensile if it contracts. This stress resulting from temperature change is known as thermal stress. It can be quite large and can cause damage. To avoid this stress, engineers may design components so they can expand and contract freely. For instance, on highways, gaps are deliberately...
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Thermal Energy Microscopically, thermal energy is the kinetic energy associated with the random motion of atoms and molecules. Temperature is a quantitative measure of “hot” or “cold”, which depends on the amount of thermal energy. When the atoms and molecules in an object are moving or vibrating quickly, they have a higher average kinetic energy (KE) (or higher thermal energy), and the object is perceived as “hot”, or it is described as being at a higher temperature. When the...
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Accelerating concrete curing is achieved by applying heat and additional moisture. This process accelerates the hydration of the cement, resulting in an earlier strength gain in the concrete. Steam curing is a method wherein the concrete products are either transported through a chamber on a conveyor belt or encased in plastic, allowing steam at atmospheric pressure to circulate freely around them. This process begins with a phase of moist curing that typically lasts between 3 to 5 hours, after...
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Related Experiment Video

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Heat Tolerance Assays Using the Drosophila Activity Monitor System: A Guide to an Executable Application for Data Analysis
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Heat acclimation: Gold mines and genes.

Suzanne M Schneider1

  • 1University of New Mexico, Department of Exercise Sciences , Albuquerque, NM, USA.

Temperature (Austin, Tex.)
|January 17, 2017
PubMed
Summary

South African gold mines pioneered heat acclimation research, evolving from genetic selection to understanding molecular adaptations for preventing heat stroke in miners.

Keywords:
ascorbic acidbody temperatureheat adaptationheat shockheat shock proteinsheat strokehyperthermiaoccupational medicinesweatingthermoregulation

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Area of Science:

  • Environmental Physiology
  • Occupational Health
  • Human Adaptation

Background:

  • South African gold mines provide a historical context for studying heat acclimation.
  • Early research by Dr. Aldo Dreosti focused on assessing and managing heat stress in mine recruits.
  • The evolution of heat stroke prevention reflects a shift from genetic assumptions to molecular understanding.

Conclusions:

  • The South African gold mining industry serves as a unique case study for heat acclimation.
  • Understanding molecular adaptations is crucial for effective heat stroke prevention.
  • Research has progressed from simplistic genetic assumptions to complex epigenetic and molecular insights.