Experimental Study On The Effect Of Microgravity Thermal Environment On Physiological Parameters Of Rabbit

In the manned spaceflight,the comfort of the thermal environment within the crew compartment is an important guarantee for the astronauts' health and efficiency.In the microgravity environment,the physiological parameters of the human body change,and the body's thermal regulation function is limited,which in turn affects its thermal comfort state.In the future,the astronauts will spend more time in space and the thermal comfort of the cabin environment will also face higher requirements.Therefore,the impact of microgravity environment on human thermal comfort will be studied,and the space environment control and life support system in China will be studied.The design has important guiding significance.This article attempts to select the body weight,body temperature,blood rheology and other indicators related to the thermal comfort of the body from the perspective of comparative medicine,and conducts an experimental study using rabbit head low-20° simulated weightlessness method.By setting the recombination and control groups,the changes in physiological indices of the two groups of rabbits at 18°C,20°C,23°C,and 26°C were observed,and the experimental results were quantitatively analyzed.The main conclusions are as follows:(1)Due to limited activities,the dietary intake of rabbits without recombinants decreased,and the body weight decreased day by day.The weight loss in the early stage of weight loss was faster and the late stage was slower.Weight loss during weightlessness is associated with loss of body fluids,muscle atrophy,and decreased energy metabolism.(2)Loss of recombination of rabbits,head in a low state,blood head to head distribution,coupled with cardiovascular dysfunction,resulting in impaired physiological thermal regulation of rabbits,thermal performance inhibition,manifested as head temperature increased day by day,rectal temperature decreased after the experiment DAY1 Also gradually rise.(3)At the same ambient temperature,the blood viscosity of the reconstituted rabbits was higher than that of the control group.The higher the temperature was,the greater the difference was,and the quality of the blood cells was decreased,resulting in impeded blood circulation and reduced body heat dissipation.Based on the changes of physiological parameters in the microgravity environment,the paper analyzes the influence of thermal physiology on thermal comfort in the microgravity environment,and puts forward measures to improve the thermal comfort of human body in microgravity from the aspects of physiological medicine and engineering technology.