The gas meter is an important instrument for measuring gas usage , and its accuracy directly affects the interests of gas users. In order to ensure the accuracy of the gas meter, it needs to be calibrated regularly. However, during the actual calibration process, errors will occur, which will affect the accuracy of the gas…
Mine mining is a comprehensive project involving many aspects. It not only includes public transportation, mining, ventilation, etc., but also includes enterprise management, blasting, machinery, ecological environment protection and many other contents. Compared with other industries, there are many unsafe factors of its own, both in the work itself and in the workplace. The mine…
Forests are one of the most important ecosystems on earth. They can not only absorb harmful gases such as carbon dioxide and oxygen, maintain the balance of atmospheric components, but also provide resources with extremely high economic value such as wood, medicinal materials, and nuts. Forest fires are one of the important disasters in forestry.…
Ventilation ducts, referred to as air ducts, are metal or composite pipes used in ventilation and air-conditioning projects in industrial and civil buildings. They are a type of municipal infrastructure designed to circulate air and reduce the concentration of harmful gases. As a common product in our lives, ventilation ducts are now widely used in…
When it comes to construction in China, it is indispensable to talk about decoration, and the decoration materials of houses are a mixture of various organic compounds. After the decoration of the house, it often needs to be ventilated and left for a period of time before people can go in to work or move…
When it comes to construction in China, it is indispensable to talk about decoration, and the decoration materials of houses are a mixture of various organic compounds. After the decoration of the house, it often needs to be ventilated and left for a period of time before people can go in to work or move…
Traditional solvent-based coatings contain large amounts of volatile organic compounds, which cause serious pollution to the environment. As people’s awareness of environmental protection increases, traditional solvent-based coatings can no longer meet the requirements of increasingly stringent environmental regulations. Under this situation, light-curing coatings emerged and entered the public eye. Light-curing coatings have the characteristics of…
Sensors used in medicine are mostly electronic, which are not suitable for many medical procedures, especially in hyperthermia treatments with high microwave (radiation) frequencies, ultrasonic fields or laser radiation. Because the metal conductors in electronic sensors are easily disturbed by electromagnetic fields such as current and voltage , they can cause thermal effects around the…
Hypothermia refers to a state in which deep body temperature (rectum, esophagus, tympanum) is lower than 35 ° C . Hypothermia can lead to death directly or indirectly. If the body temperature drops below 32 ° C , human organs will not be able to metabolize and work normally. Biologically, animals are divided into two…
Sensors used in medicine are mostly electronic, which are not suitable for many medical procedures, especially in hyperthermia treatments with high microwave (radiation) frequencies, ultrasonic fields or laser radiation. Because the metal conductors in electronic sensors are easily disturbed by electromagnetic fields such as current and voltage , they can cause thermal effects around the…