Results 251 to 260 of about 174,676,280 (307)
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Total Air Age: An Extension of the Air Age Concept
Building and Environment, 2003Abstract Air age is an important index to evaluate indoor air quality in ventilated rooms. Current definition of air age is limited to indoor part, i.e., the air age at the inlets of air supply diffusers is assumed to be zero. This work extends the air age concept to the so-called “total air age” by considering the impact of air delivery process on ...
Xudong Yang, Xianting Li, Jianrong Yang
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Current Environmental Health Reports, 2020
The evidence on the role of air pollution on skin aging has increased in recent years. The accumulating evidence is based on both, epidemiological and mechanistic studies. The purpose of this review is to evaluate the recent evidence on the impacts of air pollution on skin aging as well as identify knowledge gaps for future research.Traffic-related air
Tamara, Schikowski, Anke, Hüls
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The evidence on the role of air pollution on skin aging has increased in recent years. The accumulating evidence is based on both, epidemiological and mechanistic studies. The purpose of this review is to evaluate the recent evidence on the impacts of air pollution on skin aging as well as identify knowledge gaps for future research.Traffic-related air
Tamara, Schikowski, Anke, Hüls
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2017
During the early winter of 1955, well-known travel writer William W. Yates of the Chicago Daily Tribune paused to reflect on the state of commercial aviation in the ten years since the end of World War II. Every five seconds saw the takeoff of a propeller-driven airliner on a long-distance flight that would take passengers and cargo across continents
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During the early winter of 1955, well-known travel writer William W. Yates of the Chicago Daily Tribune paused to reflect on the state of commercial aviation in the ten years since the end of World War II. Every five seconds saw the takeoff of a propeller-driven airliner on a long-distance flight that would take passengers and cargo across continents
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The age of air defense systems
2017 International Conference on Military Technologies (ICMT), 2017This paper present a possible evolution of Air defense systems which can lead to an Air Defense Age. First the evolution of aerial threat is presented. After that the aerial threat are classified according with the rule of 4 seconds. Because is not possible to increase the projectile muzzle velocity more than 1500 m/s using chemical energy a way based ...
Laurian Gherman +3 more
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The Journal of Transport History, 2011
Transport historians are becoming increasingly attuned to the use of advertisements as a source of cultural reference. Though primarily designed to encourage the consumption of particular goods and services, advertisements also served to create, reinforce and intensify particular societal perceptions and cultural discourses surrounding the superiority (
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Transport historians are becoming increasingly attuned to the use of advertisements as a source of cultural reference. Though primarily designed to encourage the consumption of particular goods and services, advertisements also served to create, reinforce and intensify particular societal perceptions and cultural discourses surrounding the superiority (
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The Aging of Ions in Air and Nitrogen
Physical Review, 1931Previous work on the mobility of aged ions in air has been extended to the measurement in air and in nitrogen of mobilities of ions at different short ages. The ions were produced by alpha-rays directly in the field used for their measurement and the average age was obtained from the time taken by the ions to cross between the two electrodes.
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The Information Age and Hot Air.
AANA journal, 2015Forced-air warmers have been used for over twenty years to help prevent and treat inadvertent perioperative hypothermia. One result of hypothermia can be an increased risk of surgical site infection. Paradoxically, the question has been raised about the role of forced-air warmers in causing surgical site infections. A manufacturer of a competing device
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