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  3. Mechanism of diving regulators - Wikipedia

    en.wikipedia.org/wiki/Mechanism_of_diving_regulators

    Unsuitable regulator design and construction: Any design feature that reduces heat transfer between the regulator and surrounding water, such as plastic trim, can increase the risk of freezing. Regulators that are suitable and have been tested for cold water use will mention this in the specifications. High flow rates through the regulator.

  4. Pressure regulator - Wikipedia

    en.wikipedia.org/wiki/Pressure_regulator

    Regulators are used for gases and liquids, and can be an integral device with a pressure setting, a restrictor and a sensor all in the one body, or consist of a separate pressure sensor, controller and flow valve. Two types are found: The pressure reduction regulator and the back-pressure regulator.

  5. History of scuba diving - Wikipedia

    en.wikipedia.org/wiki/History_of_scuba_diving

    Scuba diver of the late 1960s. The history of scuba diving is closely linked with the history of diving equipment.By the turn of the twentieth century, two basic architectures for underwater breathing apparatus had been pioneered; open-circuit surface supplied equipment where the diver's exhaled gas is vented directly into the water, and closed-circuit breathing apparatus where the diver's ...

  6. Carbon emission trading - Wikipedia

    en.wikipedia.org/wiki/Carbon_emission_trading

    Allowance prices for carbon emission trade in all major emission trading schemes in Euro per ton of CO2 emitted (from 2008 until August 2024) Carbon emission trading (also called carbon market, emission trading scheme (ETS) or cap and trade) is a type of emissions trading scheme designed for carbon dioxide (CO 2) and other greenhouse gases (GHGs).

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  9. Regulation of greenhouse gases under the Clean Air Act

    en.wikipedia.org/wiki/Regulation_of_greenhouse...

    The LDV Rule accomplishes its objectives primarily through a traditional command-and-control approach. The most substantial requirements come in the form of two separate CO 2 standards (one for cars and the other for trucks, expressed on a gram per mile basis) that apply to a manufacturer's fleet of vehicles. To determine compliance with the ...