Mine refuge chambers are used to shield miners who fail to escape from the mine when incidents occur. Environment maintaining system plays a key role in stabilizing thermal environment of a mine refuge chamber against...Mine refuge chambers are used to shield miners who fail to escape from the mine when incidents occur. Environment maintaining system plays a key role in stabilizing thermal environment of a mine refuge chamber against heat emitted from metabolism and transferred from outside. The safety and comfort of refugees are closely related to the environment maintaining system design. In order to improve the comfort of refugees, optimization on the environment maintaining system has been done based on the previous work. To evaluate the environment of the chamber, eight volunteers were involved into the experiment. Under close observation and safety protection, they lived in a heat-isolated test chamber for 106 hours. The volunteers were asked to maintain low level of activities to simulate refugees＇ situation. It shows that the environment maintaining system worked well and the temperature, relative humidity and emitted harmful air content such as CO2 and CO were all kept in the safety level, and no discomfort was felt by volunteers at all.展开更多
Although global lakes cover only 3%of Earth’s terrestrial surface,they play a pivotal role as reservoirs of liquid freshwater,serving not only as vital sources for human consumption,industrial production,agricultural...Although global lakes cover only 3%of Earth’s terrestrial surface,they play a pivotal role as reservoirs of liquid freshwater,serving not only as vital sources for human consumption,industrial production,agricultural irrigation,and animal survival,but also as crucial contributors in maintaining ecological and environmental sustainability[1,2].In recent years,these lakes have experienced dynamic transformations influenced by various natural processes across different spatial-temporal scales,including climate warming,changes in precipitation,evaporation,discharge,and infiltration.Meanwhile,increasing human activities such as reservoir regulation,land reclamation,and water withdrawal have further promoted global lake dynamics[3].展开更多
The gut,a key component of the human digestive system,not only undertakes the heavy task of absorbing nutrients but also serves as an important hub for sensing the environment and transmitting information.As an import...The gut,a key component of the human digestive system,not only undertakes the heavy task of absorbing nutrients but also serves as an important hub for sensing the environment and transmitting information.As an important structure of the intestine,intestinal epithelium cells(IECs)play an indispensable role in maintaining the stability of the intestinal environment and regulating the physiological functions.Traditionally,research on the physiological functions of IECs has been focused on nutrient absorption.Recent studies have suggested that IECs may actively communicate with other organs.The novel communication medium derived from IECs has the potential to unlock unprecedented avenues for the regulation of physiological homeostasis.展开更多
文摘Mine refuge chambers are used to shield miners who fail to escape from the mine when incidents occur. Environment maintaining system plays a key role in stabilizing thermal environment of a mine refuge chamber against heat emitted from metabolism and transferred from outside. The safety and comfort of refugees are closely related to the environment maintaining system design. In order to improve the comfort of refugees, optimization on the environment maintaining system has been done based on the previous work. To evaluate the environment of the chamber, eight volunteers were involved into the experiment. Under close observation and safety protection, they lived in a heat-isolated test chamber for 106 hours. The volunteers were asked to maintain low level of activities to simulate refugees＇ situation. It shows that the environment maintaining system worked well and the temperature, relative humidity and emitted harmful air content such as CO2 and CO were all kept in the safety level, and no discomfort was felt by volunteers at all.
基金supported by the National Natural Science Foundation of China(42101343)the Natural Science Foundation of Jiangsu Province(BK20240258)+1 种基金Key Laboratory of Land Satellite Remote Sensing Application,Ministry of Natural Resources of the People’s Republic of China(KLSMNR-K202309)Jiangsu Marine Science and Technology Innovation Project(JSZRHYKJ202302)。
文摘Although global lakes cover only 3%of Earth’s terrestrial surface,they play a pivotal role as reservoirs of liquid freshwater,serving not only as vital sources for human consumption,industrial production,agricultural irrigation,and animal survival,but also as crucial contributors in maintaining ecological and environmental sustainability[1,2].In recent years,these lakes have experienced dynamic transformations influenced by various natural processes across different spatial-temporal scales,including climate warming,changes in precipitation,evaporation,discharge,and infiltration.Meanwhile,increasing human activities such as reservoir regulation,land reclamation,and water withdrawal have further promoted global lake dynamics[3].
基金supported by grants from the National Natural Science Foundation of China(Nos.82330017 and 82270610)the Beijing Nova Program(No.20240484505).
文摘The gut,a key component of the human digestive system,not only undertakes the heavy task of absorbing nutrients but also serves as an important hub for sensing the environment and transmitting information.As an important structure of the intestine,intestinal epithelium cells(IECs)play an indispensable role in maintaining the stability of the intestinal environment and regulating the physiological functions.Traditionally,research on the physiological functions of IECs has been focused on nutrient absorption.Recent studies have suggested that IECs may actively communicate with other organs.The novel communication medium derived from IECs has the potential to unlock unprecedented avenues for the regulation of physiological homeostasis.
