Search results for keyword: levi
security system control
Introduction
Security systems refer to the instruments, measures and methods employed by individuals, businesses, governments and other organizations to protect information, physical assets, property and people from potential threats. While security systems have typically addressed physical threa......
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Sophia
Environmental Quality Index
Introduction
Air pollution has become a serious problem in recent years. The pathogenic elements contained in air pollution can not only bring great harm to peoples physical health, but also have an adverse effect on the environment, which has a profound impact on the continuous and healthy devel......
respirable dust
Breathable dust is a fine dust particles suspended in air, which are invisible to the naked eye. It generally includes dust, smoke and other particles generated by mechanical movement, such as grinding, sanding and sawing, which are generated by motor vehicles and diesel engines, and dust generate......
superconducting magnet
Introduction
Superconducting magnets are solenoids built using special electrical wires producing very powerful magnetic fields. First introduced in 1911, superconducting magnets are now used in a variety of practical applications including cutting-edge research and modern technologies.
History
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Land reclamation
Land reclamations is a great way to help the environment and improve the land around us. It is a process of restoring land that has been damaged or polluted to its original state. It is a very important step in reducing the impact of human activities on the environment.
Land reclamations are carr......
Land reclamation
Mine Reclamation
Mine reclamation is an essential part of managing the environmental effects of mining activities. The purpose is to minimize any damage done to the surrounding environment and to restore the land to its pre-mining state as much as possible. This involves having efficient plans in......
Air flotation pool
Air Floating Pool
At first glance, the air floating pool looks like an ordinary swimming pool. However, look closer and you will notice that the pool is surrounded by walls made of air. That’s right, the walls are made of nothing but air. This is an incredible and ingenious form of engineering, ......
high frequency oscillator
High Frequency Oscillators
High frequency oscillators (HFOs) are electronic devices that generate a continuous steady-state waveform at frequencies above a kilohertz. Typically, the frequencies of HF oscillators range from a few kilohertz up to a gigahertz or more. Such devices have been traditio......
Detection and Automatic Control of Gas Recovery
Coal gas recovery and automatic control
Coal gas has always been an important energy source. In the industrial production, coal gas is used as the raw material for making a variety of products. It is also beneficial to alleviate the shortage of energy in the household. In China, coal gas is mainl......
mobile monitoring station
Introduction
A Flow Monitoring Station is an important technology used to measure the flow rate of a stream, river or other body of water. Flow rate is an important factor used to measure water quality and pollution levels. Furthermore, water flow monitoring enables better water management and is ......
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