Human Cold Stress
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Human Cold Stress
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Author : Ken Parsons
language : en
Publisher: CRC Press
Release Date : 2021-07-20
Human Cold Stress written by Ken Parsons and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-07-20 with Technology & Engineering categories.
This book provides an up-to-date, accessible, and comprehensive coverage of human cold stress from principles and theory to practical application. It defines cold stress and how people respond to it. It describes how to assess a cold environment to predict when discomfort, wind-chill, hypothermia, shivering, frostbite, and other consequences will occur. It also advises on what to do to prevent unacceptable outcomes, including determination and selection of clothing to preserve comfort and health. The book will be of interest to practitioners and students and anyone involved with fields such as textiles, clothing, and industrial hygiene.
Human Cold Stress
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Author : Kenneth C. Parsons
language : en
Publisher: CRC Press
Release Date : 2021
Human Cold Stress written by Kenneth C. Parsons and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021 with TECHNOLOGY categories.
This book provides an up-to-date, accessible, and comprehensive coverage of human cold stress from principles and theory to practical application. It defines cold stress and how people respond to it. It describes how to assess a cold environment to predict when discomfort, wind-chill, hypothermia, shivering, frostbite, and other consequences will occur. It also advises on what to do to prevent unacceptable outcomes, including determination and selection of clothing to preserve comfort and health. The book will be of interest to practitioners and students and anyone involved with fields such as textiles, clothing, and industrial hygiene.
Human Adaptations To Cold Stress
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Author :
language : en
Publisher:
Release Date : 1996
Human Adaptations To Cold Stress written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with categories.
This paper reviews the experimental findings describing human physiological adaptations induced by chronic or repeated cold exposure. The adaptations are classified as acclimatization when they occur naturally as a result of climatic or seasonal changes in temperature, or as acclimation when they occur in response to artificial or experimental manipulations of the ambient thermal environment. Three different patterns of cold adaptation can he identified. Habituation, the most common pattern observed in both acclimatization and acclimation studies, is characterized by a blunted shivering and vasoconstrictor response to cold exposure. Habituation appears to require only brief, intermittent cold exposures to he induced, and can develop when only small body regions are exposed unprotected to cold. It allows extremity skin temperatures to be maintained higher during cold exposure. The higher skin temperatures coupled with the absence of shivering are advantageous in that manual dexterity and comfort are enhanced. In one acclimation study in which subjects were exposed to moderate cold conditions for a prolonged period, a metabolic form of cold acclimation appeared to develop. This adaptation was characterized by an enhanced shivering thermogenesis during cold exposure. When individuals acclimatize or acclimate to cold conditions severe enough to repeatedly cause a significantly body temperature fall, an insulative pattern of adaptation develops, characterized by enhanced mechanisms for body heat conservation. The mechanisms determining the pattern of adaptation to chronic cold exposure appear related to type of cold exposure conditions, the amount of body heat lost and the degree to which shivering thermogenesis compensates for heat loss and defends body temperature.
Human Adaptations To Heat And Cold Stress
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Author : Michael N. Sawka
language : en
Publisher:
Release Date : 2002
Human Adaptations To Heat And Cold Stress written by Michael N. Sawka and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with categories.
Heat acclimation consists of adaptations that mitigate physiological strain of heat stress, which improve thermal comfort and exercise capabilities. Adaptations are induced by repeated heat exposures that are sufficiently stressful to elevate core and skin temperatures and elicit perfuse sweating. Most adaptations to daily heat exposure occur during the first four days, and the remainders are complete by three weeks. Heat acclimation mediated adaptations include: lower core temperature, improved sweating and skin blood flow, lowered metabolic rate, reduced cardiovascular strain, improved fluid balance, and increased thermal tolerance (i.e., cellular stress protein adaptations). These adaptations vary somewhat depending if exposed to dry or humid heat. Adaptations to chronic cold exposure can be categorized into three basic patterns: habituation, metabolic adaptations and insulative adaptations. The exact determinant of which pattern will be induced by chronic cold exposure is unclear, but the magnitude and extent of body cooling, frequency and duration of exposure, and individual factors all influence the adaptive process. Habituation is characterized by blunted shivering and cutaneous vasoconstriction; body temperature may decline more in the acclimatized than unacclimatized state. It is the most common cold adaptation and results from periodic short-term cold exposures. Metabolic adaptations are characterized by enhanced thermogenesis that develops when cold exposures are more pronounced, but not severe enough to induce significant declines in core temperature. Insulative adaptations are characterized by enhanced vasoconstriction and redistribution of body heat toward the shell that develops from repeated cold exposures severe enough to induce marked declines in core temperature.
The Physiological And Psychological Consequences Of Acute Cold Stress And Their Effects On Human Performance
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Author : Francesco Marino
language : en
Publisher:
Release Date : 1998
The Physiological And Psychological Consequences Of Acute Cold Stress And Their Effects On Human Performance written by Francesco Marino and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Endurance sports categories.
Human Heat Stress
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Author : Ken Parsons
language : en
Publisher: CRC Press
Release Date : 2019-02-05
Human Heat Stress written by Ken Parsons and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-02-05 with Science categories.
Thousands of people continue to die from heat. Heat illnesses and advice for preventing heat casualties at work, during heatwaves, sport and the effects of global warming are described. A new perspective on thermoregulation integrates physiological and psychophysical regulated variables. Heat stress indices, the WBGT and the SWreq are presented. It is time to understand and routinely use computer simulations of people in hot conditions. How to understand how a model can be constructed is also described. This book provides an accessible, concise and comprehensive coverage into how people respond to heat and how to predict and avoid heat causalities. A practical productivity model, and Burn thresholds, complete the book which begins with up to date knowledge on measurement of heat stress, heat strain, metabolic rate and the thermal properties and influences of clothing. Features Provides methods and regulations through international standards Illustrates the WBGT and analytical heat stress indices and how to construct a thermal model Discusses the role of clothing on heat stress and thermal strain Presents a new model for predicting productivity in the heat Offers a new method of human thermoregulation Considers heat illness and prevention during heatwaves and in global warming
Psychick Poruchy Ve Vztahu K Porodu
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Author :
language : en
Publisher:
Release Date : 1987
Psychick Poruchy Ve Vztahu K Porodu written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with categories.
Human Thermal Environments
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Author : Ken Parsons
language : en
Publisher: CRC Press
Release Date : 2014-04-09
Human Thermal Environments written by Ken Parsons and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-04-09 with Science categories.
In the ten years since the publication of the second edition of Human Thermal Environments: The Effects of Hot, Moderate, and Cold Environments on Human Health, Comfort, and Performance, Third Edition, the world has embraced electronic communications, making international collaboration almost instantaneous and global. However, there is still a need
Bemerkungen Ber Den Verlust Den Der Adel Im K Nigreichern In Neuerer Zeit Baiern In Neuerer Zeit Erlitt
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Author :
language : en
Publisher:
Release Date : 1825
Bemerkungen Ber Den Verlust Den Der Adel Im K Nigreichern In Neuerer Zeit Baiern In Neuerer Zeit Erlitt written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1825 with categories.
Cold Weather Stress On Humans
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Author : Elizabeth A. Harrison
language : en
Publisher:
Release Date : 1977
Cold Weather Stress On Humans written by Elizabeth A. Harrison and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with Hypothermia categories.
"The selected abstracts cover cold stress, cold tolerance, cold injuries, acclimatization, protective clothing, and cold water exposure as related to cold weather stress on humans. (This updated bibliography contains 111 abstracts, 23 of which are new entries to the previous edition.).