1,721,190 research outputs found
Cold and Safe in Space: Enhanced Radio-Resistance Induced by Hibernation
No full textCold and safe in space: enhanced radio-resistance induced by hibernatio
Thermoregulation and Sleep: Functional Interaction and Central Nervous Control
No full textEach of the wake-sleep states is characterized by specific changes in autonomic activity and bodily functions. The goal of such changes is not always clear. During non-rapid eye movement (NREM) sleep, the autonomic outflow and the activity of the endocrine system, the respiratory system, the cardiovascular system, and the thermoregulatory system seem to be directed at increasing energy saving. During rapid eye movement (REM) sleep, the goal of the specific autonomic and regulatory changes is unclear, since a large instability of autonomic activity and cardiorespiratory function is observed in concomitance with thermoregulatory changes, which are apparently non-functional to thermal homeostasis. Reciprocally, the activation of thermoregulatory responses under thermal challenges interferes with sleep occurrence. Such a double-edged and reciprocal interaction between sleep and thermoregulation may be favored by the fact that the central network controlling sleep overlaps in several parts with the central network controlling thermoregulation. The understanding of the central mechanism behind the interaction between sleep and thermoregulation may help to understand the functionality of thermoregulatory sleep-related changes and, ultimately, the function(s) of sleep. © 2021 American Physiological Society. Compr Physiol 11:1591-1604, 2021
SPACE ADAPTATION: How Life Can Be Shaped by Space Travel
No full textLife, as it functions on Earth, evolved within the constraints of the physics that can be experienced on our planet. However, these constraints drastically change if we find ourselves out in space. Outer space is an environment highly challenging for life, and the only way for a life form like ours to survive is to build a protective environment that can soften its asperity. In this chapter, we will see what the significant challenges that we will need to counteract to advance into a new era of space exploration are, how our necessities shape the structures of our space vessels, and how a long permanence in space may shape the physiology of the crew and, potentially, of their offspring
Alcune considerazioni sulla stabilità di barre di armatura in elementi in c.a. sottoposti a processi di corrosione
No full textAssessment of corrosion damage in prestressed rc beams by static and dynamic experimental tests
No full textCD-RO
Influence of reinforcement corrosion - in the compressive zone - on the behaviour of RC beams
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